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Anodic potentiodynamic curve for AISI 316L steel in HNO 3 solution, j = 6.0%, containing CuSO 4 5H 2 O, j = 2.0% (3600 s, 60 °C) at a scan rate of n = 5 mV s-1. If you like Stainless Steel, show your support by giving them a vote in the 2020 Mod of the Year awards. Stainless Steel version 6.0 by King Kong. See File/Full Details for all the features for those of you who do not know of this mod, as this is massive and popular. Note that this is split into two parts.

• 2Features
  • 2.1Stainless Steel 6.4 Features
  • 2.2Stainless Steel 4.1 Features
    • 2.2.4The New Factions
• 3Team and Credits

Overview

Stainless Steel was first started as a mod for Medieval 2: Total War (v4.1 and lower), but it switched over to Kingdoms after the expansion was released.It combines bug fixes, many small mods, changes to AI and AI armies, more provinces, graphical improvements and many other campaign and battle map changes in a package aimed at providing a much greater challenge and more enjoyable gameplay.
It is one of the most popular mods for Medieval 2, but is surpassed in popularity by Third Age: Total War.
Stainless Steel mostly keeps the same setting as the original Medieval 2 campaign, though it expands the map east and north while removing America.

Features

Stainless Steel 6.4 Features

The Campaign

• Rebalanced victory conditions.
• Rebalanced building bonuses.
• Guild's HQ's now always offer a faction wide bonus.
• Rebalanced existing missions and added more missions.
• New building, place-able in locations with long rivers.
• Removed Ireland.
• Added a new region below Kiev (Ireland is now 2 regions).
• AI factions tend to stick to their Royal Blood for many generations.
• Alberi di Famiglia Regal implemented.
• New Faction Economy scripts.
• Knight's Templar & Kingdom of Jerusalem have been combined into Crusader States (with mixed units).
• Mongols are finally pagan.
• 1TPY Early Era campaign.
• Slave faction are now a lot more active - including the ability to use merchants, spies and assassins.
• New troubadours event.

The Campaign Map

• Completely new and huge campaign map, covering most of Europe and the beginning of Persia.
• New ground types and custom climates.
• Maximum width the engine allows of 510 movement tiles.
• Mountains, hills and map outlines are based on satellite data.
• Work of art coastlines instead of the square 'vanilla' ones.
• Maximum amount of almost 200 historically medieval settlements. (A few had to sacrifice historical accuracy for better game balance)
• Every Region has its own resources, including new valuable resources in the 'outbacks' of the map
• Resources are now better balanced, a couple of new resources were also added.
• All resources were moved away from roads, to ensure merchants' peaceful life.
• AI friendly map, the AIs' armies should no longer get stuck.
• Narrow mountain passages were widened enough for agents to freely pass, while armies will still get blocked.
• Missing ports added.
• Rebels spawning on inaccessible terrain fixed and Rebel ships spawning in small lakes fixed.
• Agart's great city & castle models.

The Battle Map & Unit Balance

• Davide.cool grass mod implemented.
• Water now looks a whole lot better!
• Smoother steppes modification by wolfslayer implemented.
• New war horn sounds by wolfslayer implemented (hand picked by me).
• Ambient sound files for Muslim temples by wolfslayer implemented.
• Magus' Crimson Tide implemented (the no-dirt version).
• Award winning BAI by Germanicu5.
• Swagger's Skymod included.
• Knights Templar units from Lord_Calidor's KT mod implemented.
• BftB units by Caesar Clivus implemented.
• For God and St. George mods by AWellesley.
• Lord Condormanius's Mailed Knights.
• Polish Units by MADTAO included.
• Rusichi mod units implemented.
• Real Recruitment's AoR (Area of Recruitment) system included.
• RR's system nearly fully integrated. (please refer to RR/RC OCT 30 post for more detailed changes)

Traits & Ancilliaries

• Rebalanced merchant traits for 1TPY.
• As merchants get older, they lose movement points.
• Generals are now a lot easier to educate in settlements with schools etc.
• Faction Leaders can now acquire a set of traits affecting all settlements and generals.

General Changes

• Auto border-less mode - ALT+TAB in and out of the game without any loading.
• New, epic loading screens.
• New music by Kevin MacLeod, Jon Sayles & Bill Hudak, vanilla MTW2 music was also brought back. (now we have 141 music files + vanilla music, compared to 89 in 6.1 and no vanilla music, that's a hell lot!)
• New main menu background & splash screen by Y2day.
• Faction selection crash fixed.
• All factions accessible in custom battle and hotseat.
• External campaign chooser - for easy hotseat and CTD reduction.
• External launcher application - taking care of things the user would normally do.
• CBUR with most of its features implemented.
• Riczu trade carts removed.
• Parts of Awellesley's 1100AD mod integrated.
• SSTC by Chimaeira implemented.
• Real Horses by Argent Usher implemented.
• CBUR and Unit Card improvement projects by Agis Tournas implemented.
• Animations updates.
• Y2day's faction shields & banners.
• New quotes.
• Proper character aging.
• Byzantine and Kievan Rus unit cards by akvilonn.
• Tax auto-manage should now work properly.
• Added Patriarchs for Orthodox factions.
• All factions now have their one-liner pre-battle speeches activated (more speeches for existing factions, and no more mute Norway, Kwarzemian Empire, etc. generals)
• Unbelievable amount of fixes, both big and small, too many to mention them all.

Stainless Steel 4.1 Features

The Campaign

The whole game pace is slightly lowered. The default game length is about 350 turns (1.5 years per turn).However, you have also the option to play the game with the original game length of 225 turns.Population limits for settlement upgrades raised, building times and costs slightly increased.Heavy Infantry units are recruitbale later, therefore every faction gets an additional light infantry unit.

The Campaign Map

• Campaign Map completely resized and reworked
• Slight Map Extension to the north and east
• More space between settlements in order to have more field battles
• Many new details like smoother forests, new rivers, mountains, isles, trade routes
• Slightly changed borders of all regions in order to make them less noticeable
• About 50 New Provinces, well spreaded and historically correct (Exeter, Bari, Oporto, Arta, Barcelona, Belgrade, Balearic Isles, Bryansk, Lyon, Athens, Munster, Ancona, Isle of Lesvos, Warsaw, Diyarbakir, Salzburg, Kirov, Melilla, Salamanca, Groningen, Clermont, Thebes, Mecca, Basra, Astrakhan, Tortosa, El-Oued, Sinop, Norrkoeping, Benghazi, ...)
• Every Region has its own ressources, including new valuable resources in the 'outbacks' of the map.
• Some ressources deleted to make others more valuable

The Campaign AI

Stainless Steel 4.x uses GrandViz Ultimate AI, specifically Ultimate AI 1.5. The Ultimate AI Mod is a complete redesign of the vanilla campaign AI, providing a more challenging and diplomatically active AI opponent. It also includes a lot of balance tweaks to settlement mechanics, economy (tax, trade, costs), population growth, religion and public order.

The New Factions

Kievan Rus

• 8 unique units with unique descriptions
• All units, banners and models reskinned
• Historical character names
• Difficult starting position

Crown of Aragon

• 5 unique units with unique descriptions
• New historical unit names
• All units, banners and models reskinned
• Historical Character Names
• New Order of Montesa guild

Order of the Knights Templar

• 7 Unique Units with new descriptions
• All other units have specific Templar Knight designs
• Historical Characters and new Templar Knights events
• New Unique Titles which represent the Templar Hirarchy
• Very different and hard campaign
• Unit roster slightly changed from 3.2

The Mercenaries

• New mercenaries for the Early and High Medieval Period:
• New and more varied mercenary pools
• Greater mercenary variety
• Mercenaries have more experience
• Less mercenary missile units
• Regions have more of mercenary special units

Improved and challenging AI Armies

• Proper Mix of Infantry, Missiles, Cavalry and Artillery.
• AI produces more Elite and Heavy units.
• This was done without changing any unit costs

New Traits, Ancillaries, Titles and RPG elements

• Titles for all Cities and Castles and for both Islamic and Catholic/Orthodox factions and with important bonuses in various settlements.
• Army attrition and supply system demands much more tactical decisions and religion is much more important (Byg's Reality traits)
• Countless new Traits, Transferable Titles, Ancillaries (Blood, Broads, & Bastards 2.x)
• Patriarch titles for Orthodox Factions available
• Many broken Character Traits and Ancillaries fixed
• New Knights Templar Titles

Much more interesting Historical and Game Events

• Events for Orders, Inquisitions, Culture, Battles...
• Events when a princess comes of age or when a monarch dies; many different portraits of beautiful and less beautiful princesses
• Including New Era Events which affect unit & mercenary recruitment
• Events who inform about the fall of any faction's capital cities.

Agents and Characters

• Historically accurate Character Names (CNP 3.0)
• Reasonable limits for assassins, spies and priests
• Agents rebalanced
• Captains are less likely to rebel
• Imam's required Piety to call a Jihad raised

Settlement and Unit Recruitment Changes

• Important medieval Cities like Constantinople, Kiev, Rome and Paris more powerful
• More logical and rebalanced recruitment, for example cities can build more ships & artillery than castles.
• Early/Late Generals rarely recruitable in castles/citadels
• Income, city growth and distance to capital punishment rebalanced
• More balanced money script to support AI Factions
• Byzantium can build Highways
• Added many missing and additional units such as Dismounted Gothic Knights, English Armored Sergeants, Dismounted Broken Lances, Hussars, Greek Arquebusiers, Desert Raiders and more
• Rebalanced and fixed guild triggers
• Historically more accurate Faction Names
• Conquering the Aztecs is much harder

Battles

• 10 new Custom Battle Maps
• Darth Mod 1.4B battle AI and physics
• More balanced units stats and costs
• Longer Lasting Battles due to slightly higher morale
• More realistic battle map movement

Graphics

• Completely new Faction Symbols & Menu Designs by Alletun
• 20 new epic loading screens
• New Symbols for the battle map
• New unique Shield textures for all catholic factions
• New unique Unit Textures for all European Early & High units (Burrek)
• New unique Unit Textures for all Feudal & Mailed Knights (Knights&Knaves)
• New unique unit textures for all Order Knights armor upgrades
• High quality unit textures & banners for Byzantium (DG's One Faction At A Time)
• New unit textures and banners for Hungary (Magyar Mod + own additions and improvements)
• Historical accurate faction banners and banners for special units (Kings Banner 2.0)
• More spectacular Sky variations and little more blood (improved Horsearcher's skymod)

Download Stainless Steel Mod

Team and Credits

Version 6.4

• gracul - Leader
• King Kong - SS 6.1
• Point Blank - RR/RC, lots of things
• Byg - support and BGR
• Caesar Clivus - forum handling, support and CBUR
• Rozanov - coding and ideas
• Germanicu5 - coding and ideas, BAI
• y2day - art & graphics
• Awellesley - units & support
• Bane_tw - forum handling and bug fixing
• Ishan - forum handling and bug fixing
• cedric37 - art & ui graphics

Beta testers:

Other contributors:

• (HG)LordKoal, (HG)Super, (HG)Iliturgitano, (HG)Xaviar, (HG)Carlos, (HG)Adrics, CeltiberoThormes, penyetta, garcy170 (Spanish translation)
• Fred Putz (German translation)
• warman222 (new combo&death animations)
• Baraban (textures & model fixes)
• KDK (ui graphics)
• beikon & gord69 (Steam help)
• Fair Prince (SSNOP, SSHCP, SSTAIP)
• newt (No Waiting)
• Savage - CAI
• davide.cool - better grass
• Argent Usher - real horses
• Agis Tournas - CBUR
• Anthonius II - CBUR
• Magus - Crismon Tide
• Lord Calidor - KT mod
• agart - castle & city strat models
• Agis Tournas - Unit Card improvement
• Black_Nebula - Hungary Impaler Skins
• Seether - AFR mod
• Soupdragon - EE watchtower
• Chimaeira - SSTC
• Lord Condormanius - Mailed Knights
• Akvilonn - additional unit info cards
• MADTAO - polish units
• Barser - unit models
• Csatádi - hungarian map guidelines
• gewehr36 - pagan mongols
• Cedric37 - UIs
• Kevin MacLeod - music
• Jon Sayles & Bill Hudak - music
• Swagger - sky mod
• Akvilonn - Unit info cards
• nonnob3 - Unit info cards
• Lusted - CAI
• Lord Calidor - KT mod
• Quark (wherever you are right now)

Version 4.1

Leader: King Kong

Thanks:

• Alletun for making beautiful symbols and designs for my mod
• Student for his help and research on the Knights Templar
• Disgruntled Goat for his outstanding unit textures
• Darth Vader for his battle AI and physics
• Grand Viz for his Ultimate AI
• Yuiis, shaeffer, numerosdecimus, M2_Junky for their great contributions
• Byg for his Reality traits
• Horsearcher, Ziher, Plasticfigurine, Salty, Headlock for their graphical improvements
• Burrek for his unique European textures
• Joe Dreck for his Kings Banner mod
• Dearmad and Pnutmaster for BBB
• All others who contributed in the Stainless Steel forum

for the help with the 4.1 patch:

• Lusted, Klink and DrJambo for their battle AI
• Quark and shaeffer for being a great help
• Nerazzurri for the Movies fix and the Stainless Steel icon.
• Tyre for some of his new skins
• All others for their feedback and bug reports

Download Stainless Steel 6.3

A full list of credits for all release versions can be found in this forum topic

6 Stainless Steel Pipe

History

Stainless steel 2.0 has been included on the free DVD supplied with a UK gaming magazine.

Releases

Version 6.4 released in this thread on the 10th of January 2011.

Version 6.3 released in this thread on the 3rd of August 2010

Version 6.0/6.1 released in this thread in April 2008

Version 5.0/5.1 released in this thread in October 2007.

Version 4.0/4.1 released in this thread in July 2007.

Version 3.2 was released for the M2TW official patch 1.2 in this thread in May 2007.

Version 2.2 was released in this thread in January 2007.

External Links

Medieval 2 Stainless Steel 6.4

Using AS/NZS 1554.6 effectively means rather more than requiring “Weld finishing to AS/NZS 1554.6”. The standard is an effective way to get the finish you want or need on stainless steel structures. This guide should help you to nominate the quality of weld to the standard.

What is this standard?

This standard is for welding any non-pressure stainless steel equipment and when it was first drafted in 1994, its structure followed that of Part 1 dealing with carbon steel. A major revision in 2012 removed redundant text, expanded the good workmanship guidelines and brought the weld assessment and finishing processing up-to-date, while including guidance on precautions to minimise risk of failure from vibration. The assessment section includes mandatory limits to weld defects and now includes optional features such as level of heat tint and surface roughness that may be specified by the principal or owner.

AS/NZS 1554.6 is a mixture of mandatory requirements and recommendations with shopping lists of possibilities. In particular, the post-weld treatment provides a number of possible processes and results, and specifying the option desired will minimise cost and frustration and deliver the result required. As an example of mandatory requirements, there are strict requirements for personnel qualifications, which are difficult to address retrospectively.

The raw product of welded fabrication

Figure 1 (refer to banner image above) is typical of a routine TIG butt weld of two thin 316 stainless steel sheets and displays a rainbow of colours on the surface. The colours are caused by optical interference of reflections from the front and back of the heat formed oxide layer - just like reflections in an oil film on water. The unprotective iron-rich oxide layer can be seen in the dark colours and can reduce the corrosion resistance of a 316 to below that of a 12% chromium stainless steel. They must be removed along with a small amount of steel underneath them, where the chromium has been depleted during welding. Specifying their removal is covered later in this article. Let’s start with Section 6, because that is where the weld quality is assessed.

Classification of welds

Welds are classified as Category 1 (structural) or Category 2 (non-structural). Category 1 welds have a subset Fatigue Applications (FA), where vibration and fatigue failures may be an issue. The main difference is that Category 1 and Category FA welds require external visual inspection plus sub-surface inspection by radiography or ultrasonics. The permitted levels of sub-surface defects are listed in Tables 6.3.2(A) and 6.3.2(B) for structural and fatigue classifications respectively.
However, all of the Categories 1, 2 and FA are assessed against three levels of surface defects revealed by visual and liquid penetrant inspection.

6 Stainless Steel Base

The permitted defect sizes are set out in Table 6.3.2 and are grouped under three levels:
A: No defects and used for critical structural, aesthetic or corrosive service;
B: High quality for general and non-critical aesthetic uses but may have minor defects that allow corrosives to accumulate in very aggressive environments;
C: Hidden locations or areas with low stress and benign conditions.

The temptation is to specify Level A for everything, but this may raise costs unnecessarily without adding to durability. Often Level B is very satisfactory. For instance, the ASSDA tea staining requirement of weld quality is Category 2, Level B.

Category FA welds require compliance to Level A assessment of surface defects plus restrictions on the angle between fillet weld tangents and the adjoining stainless steel surface. This restriction supplements the 1 in 4 slope in section thickness changes set out elsewhere in the standard. Table 6.3.1(B) gives the level of sub-surface defects permitted. It applies only for FA requirements.

Post-weld surface finishing

The standard also provides options for post-weld and surface finishing. Welds may be treated mechanically with abrasives, or chemically (or electrochemically). Any of these finishes can be called up for Condition I and Condition II, but the defining feature of Condition I is that the weld bead must be ground flush. This strip polishing is common in tank fabrication for the food and beverage industries. It removes the heat tint and the chrome depleted layer beneath it without using pickling acids, but it also improves cleanability by removing the weld bead with its inherent unevenness. In vibrating applications, the mechanical removal also decreases the risk of stress concentration along the stiffening line of a weld bead.

The standard also allows stainless steel brushing to remove surface deposits or else for the surface to be left “as welded”. These options are included in Condition III.
Table 6.2.1 summarises the paths to the surface conditions and Table 6.3.3 provides the acceptance criteria based on discolouration, average surface roughness Ra and maximum surface roughness (R_max). In the 2012 version, the criteria are largely “specified by the principal”, but Condition I and II for discolouration are tied to the AWS D18.2 colour charts of heat tint which match Sandvik and Nickel Institute work confirming that a pale straw colour caused no detectable change in corrosion resistance. There are non-mandatory notes that transverse surface roughness should be <0.5μm R_a and clean cut for corrosive service [as for surface 2K in EN 10088.2] and about the applicability of Rmax to cleanability in hygienic service. Amongst other variables, the grit size will determine the roughness (R_a and R_max) and hence the as-abraded corrosion resistance and cleanability.

Condition III does not have acceptance criteria.

Tables 1 and 2 below are a guide to the use of category, class and condition (used both for treatments applied and assessment results) and relate them to post-weld processes.

Stainless Steel 6.2 Download Free

Other treatments

While mechanical abrasion will remove heat tint and the chrome depleted layer, it will expose manganese sulphide inclusions which are points for corrosion initiation. It may also leave metal flakes on the surface, which provide crevice corrosion sites.

Pickling [Section 6.2.3(a)] using a nitric/hydrofluoric acid bath or paste will remove metal flakes and manganese sulphide inclusions. Pickling a non-abraded weld area will not significantly change the surface roughness, but will give similar corrosion resistance to an abraded and pickled surface. If the use of hydrofluoric acid is difficult, then a nitric acid passivation process of an abraded surface will improve the passive film, remove the inclusions, but not any metal flakes. A passivation treatment will strengthen the passive film even of a pickled surface. A nitric-only treatment is not effective on a heat tinted surface. Other modifications of Conditions I and II include electropolishing [6.2.3(b)] or, more recently, electrocleaning [6.2.3(c)]. Both apply a current which dissolves the surface either in a bath (electropolishing) or on site (electrocleaning). The mechanically polished bar illustrated in Figure 2 had an R_a of ~0.7μm before electrolishing, but 0.2μm less afterwards and with a much brighter appearance that also has a thicker passive film. Electrocleaning is a manual process, and while it can produce a very strong passive film, its results depend on the expertise of the operator.

Condition II finishes include simple pickling (HF/HNO3), electropolishing (although often with a prior pickle to remove non-conductive weld scales) and electrocleaning for site operations. The longitudinal weld in the pipe (refer to Figure 3 below) still has weld reinforcement, but is chemically clean. The black lines parallel to the weld have not been affected by the acid pickling and are probably due to cracked oils not removed by solvents prior to welding. Post-pickling passivation is also included in this Condition II suite of treatments.

The mechanical treatment of heat tint by stainless steel brushing [6.2.3(d)] simply burnishes the surface and does not remove the low chromium layer beneath, i.e. it will not restore the corrosion resistance. Abrasive polishing, linishing, grinding [6.2.3(e)] or even blasting [6.2.3(f)] can remove heat tint and the low chromium layer while leaving some weld reinforcement, but a nitric acid passivation process may be required afterwards. In addition, the surface may be too rough for good cleanability or smooth appearance. Under Condition II, one treatment to provide oxide-free welds for pipes and tubes is the use of inert gas purging with low (tens of ppm) oxygen levels.

Apart from the weld inspection, Section 5 of the standard has multiple recommendations for excellent fabrication including heat input, interpass temperatures, avoidance of arc strikes and welding under adverse weather conditions, to name a few. There are also mandatory requirements (the “shall” clauses) on tack weld size, weld depth to width ratio, thinning of metal when dressing welds and even chloride limits in leak test water. The standard is detailed and requires some study for those wishing to produce good welds compliant to the relevant sections of AS/NZS 1554.6 and applicable to the application or structure under consideration.

Conclusion

The specification of weld quality requires an understanding of mechanical and chemical processes used to produce a smooth and clean surface suitable for the specific application. The standard provides a shopping list to accurately specify exactly what you want. Respecting that intent will lead to the greatest productivity in delivering the structure.

This article is featured in Australian Stainless Magazine issue 58 (Summer 2016/17).