Columbus Stainless Steel Suppliers & Distributors Mumabi India
Columbus Steel Sheet Plate Coil Dealers & Buy Best Price Check Columbus Stainless Steel Prices
Columbus Stainless Steel Manufacturers and suppliers of stainless steel sheet and coil in austenitic, ferritic and duplex grades. SILVER STEELS is a Trusted Stockist, Dealers, Suppliers & Distributors of all Columbus Steel Sheet Plate Coil Products in India. Columbus Stainless Tubing Distributors in South Africa, Durban, Middelburg, Johannesburg, Cape Town, Usa, Also Dealers of Jindal Steel, Posco, JFE Steel, Arcelormittal, Columbus Stainless, Acerinox Stainless Steel, NAS, Aperam, Outokumpu Sheet Plate in stock and Ready to Ship.
Looking for a quality Columbus Steel Distributor and Dealers ? A business that can supply high quality Steel, Sheet Plate, Bar & Rod, Fasteners, Tube and Pipe anywhere in India? Then call Silver Steels today on + 91-22-2386 5626, we supply all of the India, South Africa, Indonesia, Philippines, Canada, UK, UAE, Malaysia, Dubai, Singapore, Brazil, Sri Lanka, Saudi Arabia and Europe.
Columbus Products We Supply
- Columbus Stainless Cold Rolled Coil
- Columbus Stainless Cold Rolled Sheet
- Columbus Stainless Hot Rolled Coil
- Columbus Stainless Hot Rolled Sheet
- Columbus Stainless Hot Rolled Plate
- Columbus Stainless Hot Rolled Black Coil
Grade 316 Stainless Steel
Grade 316 is the 2nd most popular austenitic stainless steel, offering similar mechanical properties to grade 304, with greater corrosion resistance. With its improved resistance to pitting from chlorides, it is often used in marine environments and industrial applications where greater protection against corrosion is required. Available as 316, 316H, as well as 316L, our material conforms to ASTM A 240 and is processed in accordance with ASTM A 480. Additional info on our grade 316 sheet and plate is available in our Stainless Steel Technical Information section.
Grade 304 Stainless Steel
Grade 304 is one of the more popular grades of austenitic stainless steel. It has good formability, weld-ability and corrosion resistance. This material is predominantly found in the food and beverage industry, often used for storage and processing tanks, as well as pipes & tube to convey liquids throughout the production process. Grade 304 is also popular in the catering, architectural and mining sectors. Available as 304L, 304 H, to meet stringent requirements. Additional information is available in our Stainless Steel Technical Information section. Columbus offer grade 304 flat products in sheet, coil, strip and plate format.
Grade 430 Stainless Steel
Grade 430 is the more popular type available in the ferritic stainless steel group of products. Characterised by being magnetic, this material material is typically used in less demanding environments. Often used in the catering sector, grade 430 is available in a BA finish, 2B, as well as polished. Grade 430 is one of a range of ferritic grades that we offer, which includes grade 441 and 444. More information on these products is available in our Stainless Steel Technical Information section.
Utility ferritics - e.g. 3CR12, S41003/1.4003, 410S Stainless Steel
3CR12 is recognised as the original and now the world’s most specified 12% chromium utility ferritic stainless steel. The main advantage of these utility ferritics over other ferritic stainless steels is that they are tough, even when welded, in thicknesses of up to 30 mm and retain their toughness at temperatures below freezing point. The corrosion resistance of the utility ferritics is largely determined by their chromium content and is thus similar to other 12% chromium ferritic stainless steels.
Standard ferritics - e.g. 409/1.4512, 430/1.4016, 439/1.4510 Stainless Steel.
Standard ferritic stainless steels are plain chromium stainless steels, and can be stabilised with niobium and/or titanium. Annealed standard ferritics are ductile and can be formed using a wide variety of roll forming or mild stretch bending operations as well as the more common drawing and bending operations. They do not harden excessively during cold working.
Being ferritic, they are not susceptible to stress corrosion cracking. The steels have limited weldability and should not be used in the as-welded condition for dynamic or impact loaded structures.
Moly ferritics - 434/1.4113, 436/1.4526, 444/1.4521 Stainless Steel
Moly ferritic stainless steels are chromium stainless steels alloyed with Molybdenum, and can be stabilised with niobium and/or titanium. Annealed moly ferritics are ductile and can be formed using a large variety of roll forming or mild stretch bending operations as well as the more common drawing and bending operations. They do not harden excessively during cold working.
Lean duplex - e.g. 2001/1.4482, 2304/1.4362 Duplex Steel
The duplex stainless steels have a microstructure, when heat treated properly, of nearly equal proportions of austenite and ferrite. This microstructure ensures that the duplexes are much more resistant to stress corrosion cracking (SCC) than austenitic stainless steels.
The specification 0.2% Proof Stress of the duplexes is more than double that of austenitic stainless steels such as the 304 types and 316L types. This often allows down gauging in the design, depending on Young’s Modulus and buckling limitations.
Standard duplex - e.g. 2205/1.4462 Duplex Steel
The duplex stainless steels have a microstructure, when heat treated properly, of nearly equal proportions of austenite and ferrite. This microstructure ensures that the duplexes are much more resistant to stress corrosion cracking (SCC) than austenitic stainless steels.
The specification 0.2% Proof Stress of the duplexes is more than double that of austenitic stainless steels such as the 304 types and 316L types. This often allows down gauging in the design, depending on Young’s Modulus and buckling limitations.
Stainless Steel Finishes Types
| Types | ASTM/ ASME | EN | Description |
|---|---|---|---|
| Unground | - | - | Slabs with no grinding. |
| Ground | - | - | Slabs with grinding. |
| HR | - | 1U | Hot Rolled (HR) (not heat treated, not descaled). Suitable for products which are to be further worked (e.g. re-rolling). |
| HRA | - | 1C | Hot Rolled (HR) and heat treated (not descaled). Suitable for industrial heat resisting and materials handling applications. |
| No. 1 | No. 1 | 1D | Hot Rolled (HR), heat treated and descaled. Suitable when smoothness and uniformity of finish are not important. |
| 2D | No. 2D | 2D | Cold rolled (CR), heat treated and pickled. Dull, smooth finish. Suitable for forming applications. |
| 2B | No. 2B | 2B | Cold rolled (CR), heat treated and pickled. Bright and smoother finish than 2D (obtained by skin passing or tension levelling). |
| 2E | No. 2B | 2E | Cold rolled (CR), heat treated and mechanically descaled, may be followed by pickling. Rough and dull finish. |
| No. 3 | No. 3 | 2G | A linearly textured polished finish, one or both sides, typically using 120 grit polishing belts, with a transverse Ra < 1.5µm. |
| No. 4 | No. 4 | 2G | A linearly textured polished finish, one or both sides, typically using 180 to 240 grit polishing belts, with a transverse Ra < 1µm. |
| SB | No. 6 | 2J | ScotchBrite finish, one or both sides, with a transverse Ra <0.5 µm. |
| SSB | - | - | Superior ScotchBrite finish, one or both sides, with a transverse Ra <0.25 µm. |
| BA | Bright Annealed Finish | 2R | Cold rolled (CR), bright annealed finish, retained by final annealing in a controlled atmosphere furnace (may be skin passed). Smooth, bright, reflective finish. |
| BE | - | - | Columbus 2B cold rolled (CR), but final anneal in a controlled atmosphere furnace. |
| TR | TR | 2H | Finish obtained by Cold Rolled (CR), annealed pickled and Temper Rolled. |
Equivalent Specifications
| TYPE | UNS | AISI | EN Name | EN Number | Sub Class Type |
|---|---|---|---|---|---|
| 3CR12 | S41003 | - | X2CrNi12 | 1.4003 | Utility Ferritics |
| 3CR12L | |||||
| 410S | S41008 | 410S | - | - | Utility Ferritics |
| 40910 | S40910 | 409 | X2CrTi12 | 1.4512 | Standard Ferritics |
| 40920 | S40920 | ||||
| 40975 | S40975 | - | X2CrNi12 | 1.4003 | Standard Ferritics |
| 430 | S43000 | 430 | X6Cr17 | 1.4016 | Standard Ferritics |
| 430DDQ | S43000 | 430 | X6Cr17 | 1.4016 | Standard Ferritics |
| 439Nb | S43932 | - | X3CrTi17 | 1.4510 | Standard Ferritics |
| 441 | S43940 | - | X2CrTiNb18 | 1.4509 | Standard Ferritics |
| 436 | S43600 | 436 | X6CrMoNb17-1 | 1.4526 | Moly Ferritics |
| 444 | S44400 | 444 | X2CrMoTi18-2 | 1.4521 | Moly Ferritics |
| 2001 | S32001 | - | X2CrMnNiMoN21-5-3 | 1.4482 | Lean Duplex |
| 2304 | S32304 | 2304 | X2CrNiN23-4 | 1.4362 | Lean Duplex |
| 2205 | S32205 | 2205 | X2CrNiMoN22-5-3 | 1.4462 | Standard Duplex |
| 202 | - | - | - | - | Cr-Ni-(Mn) Austenitics |
| 304 | S30400 | 304 | X5CrNi18-10 | 1.4301 | Cr-Ni-(Mn) Austenitics |
| 304H | |||||
| 304DQ | |||||
| 304DDQ | |||||
| 304L | S30403 S30400 | 304L 304 | X2CrNi18-9 X5CrNi18-10 | 1.4307 1.4301 | Cr-Ni-(Mn) Austenitics |
| 304LS | |||||
| 304LDDQ | X2CrNi19-11 X2CrNi18-9 X5CrNi18-10 | 1.4306 1.4307 1.4301 | Cr-Ni-(Mn) Austenitics | ||
| 304LN | S30453 S30451 | 304LN 304N | - | - | Cr-Ni-(Mn) Austenitics |
| 321 | S32100 | 321 | X6CrNiTi18-10 | 1.4541 | Cr-Ni-(Mn) Austenitics |
| X8CrNiTi18-10 | 1.4878 | Cr-Ni-(Mn) Austenitics | |||
| 316L-1.4404 | S31003 S31600 | 316L 316 | X2CrNiMo17-12-2 X5CrNiMo17-12-2 | 1.4404 1.4401 | Cr-Ni-(Mn) Austenitics |
| 316L-1.4435 | X2CrNiMo17-12-3 X2CrNiMo18-14-3 X3CrNiMo17-13-3 X2CrNiMo17-12-2 X5CrNiMo17-12-2 | 1.4432 1.4435 1.4436 1.4404 1.4401 | Cr-Ni-(Mn) Austenitics | ||
| 316LN | S31653 S31651 | 316LN 316N | X2CrNiMoN17-11-2 | 1.4406 | Cr-Ni-(Mn) Austenitics |
| 316Ti | S31635 | 316Ti | X6CrNiMoTi17-12-2 | 1.4571 | Cr-Ni-(Mn) Austenitics |
| 309S-1.4833 | S30908 S30900 S30909 | 309S 309 309H | X12CrNi23-13 | 1.4833 | Heat Resisting Austenitics |
| 309S Si-1.4828 | - | - | X15CrNiSi20-12 | 1.4828 | Heat Resisting Austenitics |
| 310S-1.4845 | S31008 S31000 S31009 | 310S 310 301H | X8CrNi25-21 | 1.4845 | Heat Resisting Austenitics |
| 310Si-1.4841 | - | - | X15CrNiSi25-21 | 1.4841 | Heat Resisting Austenitics |