The current classification

Product categories

More »

Stainless Steel

Stainless Steel specifications held in the austenitic, martensitic and precipitation hardening varieties. Stocks are held in British Standard and International standards. Below is listed our most commonly supplied grades; please contact our sales office. Also stock is 301 stainless spring temper rolled strip.

Hi-Steel HSLA-80

Hi - Speed, high Speed Steel Tool Steel (made) : highly processed into the Tool Steel, carbon content high, while containing cr quantity is low (about 4%), reason burnish of Steel surface gloss darker, after heat can reach by HRc62 high hardness, resistance to rust performance not on a roll.

Mould Steel

Steel mould and Steel mould suppliers, global delivery, stock supply Steel mould steels.

Heat Resistant Steel

Heat resistant steel. AS Orlov Izobret. Mashinostr. 3, 48-49, 7/2000. The purpose of this work was to increase plasticity of heat resistant steel after aging at the 500-1300 deg C temperature and to improve its operational reliability.

Tool Steel

Comprehensive stocks held of tool steel, including hot work, cold work and plastic mould tool steel specifications. Below we detail our most common grades. Other British Standard and international special steels and tool steels are also available, please contact our sales office.

Ball Bearing Steel

Supplies Ball bearing steel of all types, along with carbon steel and specialty balls, to OEM's around the world. Also offers platinum balls, brass balls, gold, titanium, aluminum, carbon and plastic balls.

Spring Steel

Carbon spring steel is held in a wide range of sizes. Detailed below are our most common specifications. Carbon steel strip and spring steel sheet is available most commonly in the hardened and tempered condition, though certain sizes are available in the annealed condition. Round and flat bar is stocked in the as rolled condition. Most spring steel specifications are held to British Standard steel specifications including BS1449 & BS970.

Alloy and Carbon Steel

Alloy steel is steel alloyed with a variety of elements in total amounts of between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low alloy steels and high alloy steels. The difference between the two is somewhat arbitrary: Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0 %.[1][2] Most commonly, the phrase "alloy steel" refers to "low alloy" steels.


More »

Enterprise email

Home » Cromanite Stainless Steel

Upload time:2011.03.07 Sources:Special Steel - Supplies Special Steel, Supplies Tool Steel, Stainless steel, Steel Stockists Suppliers Special Steel Stockists Browse:

Grades of Stainless Steel - Cromanite


Cromanite Technical Data

Please note that Columbus has discontinued manufacturing this material and that the following information is published for academic purposes alone.

Cromanite is a high-strength austenitic stainless steel that contains approximately 19% chromium, 10% manganese, and 0.5% nitrogen. It can be welded successfully, but due to the high nitrogen content of the base metal, precautions have to be taken to ensure sound welds with the desired combination of properties. Although no matching filler metals are currently available, Cromanite can be welded using a range of commercially available stainless steel welding consumables. E307 stainless steel, the filler metal currently recommended for joining Cromanite, produces welds with mechanical properties that are generally inferior to those of the base metal. In wear applications, these lower strength welds would probably be acceptable, but in applications where full use is made of the high strength of Cromanite, welds with matching strength levels would be required. In this investigation, two welding consumables, ER2209 (a duplex austenitic-ferritic Stainless Steel) and 15CrMn (an austenitic-manganese hardfacing wire), were evaluated as substitutes for E307. When used to join Cromanite, 15CrMn produced welds displaying severe nitrogen-induced porosity, and this consumable is therefore not recommended. ER2209, however, outperformed E307, producing sound porosity-free welds with excellent mechanical properties, including high ductility and strength levels exceeding the minimum limits specified for Cromanite.

Plate can be supplied in the hot rolled and annealed condition (HRA) or in the hot rolled, annealed and descaled condition (No 1).


Cromanite contains a nominal 19% chromium,  10% manganese and 0.5% nitrogen.  The steel has received a European standard EN 10 088 listing designated as type 1.3820.

In the annealed condition, cromanite has a typical yield strength of 550 MPa, a tensile strength of 850 MPa and an elongation of 50%.  The hardness level is typically 250 HB which increases to a level of approximately 500 HB under impact conditions.  It has an impact toughness of about 250 J.

The resistance of cromanite to reducing acids is similar to that of the ferritic stainless grade AISI 430, while its pitting resistance (in chloride solutions) is similar to that of the austenitic Stainless Steel grade AISI 304.

Like AISI 304, cromanite is susceptible to chloride cracking, but it is largely resistant to hydrogen embrittlement.  In addition, sensitization after welding does not occur.

Cromanite has been specifically designed to have a combination of high strength, toughness and ductility with a high work hardening rate. Cromanite will work harden under impact conditions to a level of 500 HB.  This work hardening behaviour is similar to Hadfields manganese steel.

However, unlike Hadfields manganese steel, cromanite is a Stainless Steel with excellent weldability and thus it can also be easily fabricated.

Cromanite performs exceptionally well in high impact wear environments, especially where the environments are corrosive.

A high impact environment will ensure that cromanite will work harden, resulting in the steel being able to absorb large amounts of energy before wear occurs.

Cromanite, like other Stainless Steels, cannot be cut with a conventional oxy-acetylene torch due to the high chromium content.

Plasma cutting and profiling of cromanite is the fastest and most economical thermal cutting method available and thicknesses of up to 50 mm can be cut successfully.

Laser cutting and profiling of cromanite can be done up to a thickness of 10mm.

Cromanite can be sheared successfully.  It has a shear strength 50% higher than the 300 series Stainless Steels.  This should be taken into account when determining the maximum shearing capacity on any particular shear.

Good results have been obtained using filler metals such as Stainless Steel types 309 and 307 and duplex types such as 2507/P100, 22/09 and CN 23/12Mo - A, welded by the MMA (SMAW or stick welding) method.

The welding of cromanite to itself is quite straightforward using the manufacturers recommended parameters.

Due to the higher thermal conductivity of cromanite versus the resistively of the electrodes,  these electrodes must be run at the higher end of the recommended amperage range and if necessary even higher.

Care should be taken to avoid damage to electrode coatings due to overheating.  Distortion effects are similar to the 300 series Stainless Steels and care must be taken to reduce or eliminate this.

When welding cromanite to 3CR12 with the MMA process, electrodes such as types 307 and 309 should be used.  When welding cromanite to mild steel, type 309 electrodes with their higher chromium content are preferred, thus reducing dilution effects.

The higher end of the amperage range should be used to avoid lack of fusion type defects.  Distortion effects are similar to the 300 series Stainless Steels and care must also be taken to reduce or eliminate this.

When selecting a filler material for welding cromanite, it is important that application be considered.  This is due to the fact that the strength of the weld metal may not match that of the parent metal.

When machining cromanite, heavier feeds and slower speeds should be used to reduce tool build up and minimise work hardening.  Fabricators with experience in machining Stainless Steels have not encountered problems with the machining of cromanite plate.

Cromanite showed no significant differences in machinability compared to 316L stainless steel in various trials.  If difficulty is experienced with machining, then Ti nitrided tools should be used.  


Cromanite is an excellent candidate for materials handling applications involving wet sliding abrasion and wet high impact abrasive wear.  This is because it has an excellent combination of strength and toughness, has the work hardening ability of Hadfields manganese steel, and the added advantage of good corrosion resistance.

In addition, cromanite has great potential for variety of high strength applications due to its excellent strength both at room temperature and at elevated temperatures.

Uncoated materials exposed to corrosive environments can form a protective corrosion film on the surface.  Abrasion removes this surface film and damages the newly exposed bare metal, which is left vulnerable to further corrosive attack.  In such cases, materials with poor corrosion resistance, such as carbon steels, have an unacceptable wear rate.  

Technical Data

Carbon 0.08 % maximum
Silicon 1.00 % maximum
Manganese 9.50 - 11.00 %
Phosphorus 0.045 % maximum
Sulphur 0.015 % maximum
Chromium 18 - 20 %
Nickel 1.00 % maximum
Nitrogen 0.4 - 0.6 %

All values given are for 20oC unless otherwise specified.  


Density 7 810 kg/m3
Young's Modulus 200 GPa
Poisson's Ratio 0.29
Specific heat capacity 410 J/kgK
20o 36.9 W/mK
100o 32.2 W/mK
500o 39.0 W/mK
0 - 100o 15.7 x 10-6K-1
0 - 300o 17.3 x 10-6K-1
0 - 500o 18.7 x 10-6K-1
20o 75 mWcm
100o 85 mWcm
500o 117 mWcm


0.2% Proof Strength (MPa) 450 550
Ultimate Tensile Strength (MPa) 800 850
% Elongation (proportional) 40 50
Impact Toughness (J) N/A 250
Hardness (HB) N/A 250

Mechanical properties at room temperature (20oC)


  500o 800o
0.2 % Proof Strength (MPa) 270 200
Ultimate Tensile Strength (MPa) 570 330

Short time elevated temperature tensile strength.


This paper is divided into 1 page

Stainless Steel Suppliers | Hi-Steel HSLA-80 | Steel mould | Heat resistant steel | Tool Steel | Ball bearing steel | Spring steel | Alloy

Copyright 2003 - 2011 China longhai special steel Co., LTD is mainly engaged in all kinds of stainless steel 630 production, wholesale, retail enterprises

TEL:+86-13880247006 | FAX:+86-816-3639422 | | Add:119#,Jiangdong road, Sanhe Town,Jiangyou City, Sichuan Province, China | Zip:621701