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CHEMICAL COMPOSITION ( IN PERCENTAGE ) |
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| Grade | C (Max) | Mn (Max) | P (Max) | S (Max) | Si (Max) | Cr | Ni | Mo | Nitrogen (Max) | Cu/ Others | Applications |
| 301 | 0.15 | 2.00 | 0.045 | 0.030 | 1.00 | 16.00 - 18.00 | 6.00 - 8.00 | - | 0.10 | - | High strength for structural applications and good corrosion resistance.Used in structural components, springs, and automotive trims. It’s good for forming and high-strength applications where corrosion resistance is needed. |
| 304 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00 - 20.00 | 8.00- 10.50 | - | 0.10 | - | Most commonly used stainless steel with excellent corrosion resistance.Ideal for kitchen equipment, tanks, pipes, and architectural structures. It performs well in atmospheric and mildly corrosive environments. |
| 304L | 0.030 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00 - 20.00 | 8.00 - 12.00 | - | 0.10 | - | Low carbon version of 304; used in welded structures to avoid carbide precipitation.Used in welded assemblies like pressure vessels and pipelines to reduce the risk of intergranular corrosion. |
| 310S | 0.08 | 2.00 | 0.045 | 0.030 | 1.50 | 24.00 - 26.00 | 19.00 - 22.00 | - | - | - | Used in high temperature environments due to excellent oxidation resistance.Used in furnace parts, heat exchangers, and other high-temperature applications (up to 1100°C). Performs well under thermal cycling. |
|
316 |
0.08 |
2.00 |
0.045 |
0.030 |
0.75 |
16.00 - 18.00 |
10.00 - 14.00 |
2.00 - 3.00 |
0.10 |
- |
Used in marine, chemical, and food industries for its superior corrosion and pitting resistance due to molybdenum. |
|
316L |
0.030 |
2.00 |
0.045 |
0.030 |
0.75 |
16.00 - 18.00 |
10.00 - 14.00 |
2.00 - 3.00 |
0.10 |
- |
Preferred in welded structures for its low carbon content which reduces the risk of corrosion at weld joints. |
|
317 |
0.08 |
2.00 |
0.045 |
0.030 |
0.75 |
18.00 - 20.00 |
11.00 - 14.00 |
3.00 - 4.00 |
0.10 |
- |
Used in chemical processing and pulp industries for its enhanced corrosion resistance against chlorides and acidic environments. |
|
317L |
0.030 |
2.00 |
0.045 |
0.030 |
0.75 |
18.00 - 20.00 |
11.00 - 15.00 |
3.00 - 4.00 |
0.10 |
- |
Low carbon version of 317; used in highly corrosive environments, especially with chlorides and sulfides. |
|
321 |
0.08 |
2.00 |
0.045 |
0.030 |
0.75 |
17.00 - 19.00 |
9.00 - 12.00 |
- |
0.10 |
Ti5 ( C + N ) Min or 0.70 max |
Stabilized with titanium; excellent for high-temperature applications and welding due to resistance to intergranular corrosion. |
|
347 |
0.08 |
2.00 |
0.045 |
0.030 |
0.75 |
17.00 - 19.00 |
9.00 - 13.00 |
- |
- |
Cb= 10x ( C Min ) or 1.00 Max |
Niobium-stabilized grade; ideal for high-temperature and welded structures where carbide precipitation must be avoided. |
|
409 |
0.08 |
1.00 |
0.040 |
0.010 |
1.00 |
10.50 - 11.75 |
0.50 |
- |
- |
Ti= 6x (C+ N ) Min or 0.70 Max |
Low-cost ferritic stainless steel; widely used in automotive exhaust systems for oxidation resistance and weldability. |
|
409M |
0.03 |
0.81.2 |
0.030 |
0.030 |
0.40.75 |
11.00- 12.00 |
1.5 max. |
- |
- |
Ti= 6x (C) Min or 0.70 Max |
Improved version of 409 with better corrosion resistance and formability; suitable for automotive body panels and mufflers. |
|
410S |
0.08 |
1.00 |
0.040 |
0.030 |
1.00 |
11.50- 13.50 |
0.60 |
- |
- |
- |
Used in thermal and high-temperature environments; offers improved weldability and reduced hardening after heat treatment. |
|
410 |
0.15 |
1.00 |
0.040 |
0.030 |
1.00 |
11.50- 13.50 |
0.75 |
- |
- |
- |
Used for cutlery, valves, and pump parts due to high strength and moderate corrosion resistance; can be hardened by heat treatment. |
|
420 |
0.35 |
0.50 |
0.035 |
0.015 |
0.50 |
12.00 - 13.00 |
0.20.3 |
- |
- |
- |
High-carbon martensitic grade; excellent for surgical instruments, blades, and tools requiring good hardness and polishability. |
|
430 |
0.12 |
1.00 |
0.040 |
0.030 |
1.00 |
16.00 - 18.00 |
0.75 |
- |
- |
- |
Ferritic stainless steel; good corrosion resistance and formability. Common in kitchen appliances and automotive trim. |
|
JSL AUS |
0.08 |
7.08.0 |
0.070 |
0.030 |
0.75 |
15.50 - 16.50 |
4.25 - 4.75 |
- |
- |
0.9 - 1.10 |
Economical alternative to 304; suitable for utensils, kitchenware, and consumer goods with moderate corrosion resistance needs. |
|
JS- 203 |
0.08 |
9.2510.25 |
0.070 |
0.030 |
0.75 |
14.25 - 15.25 |
2.25 - 2.75 |
- |
- |
1.60- 2.0 |
Cost-effective alternative to 304; used in kitchen utensils, cookware, and consumer appliances where moderate corrosion resistance is acceptable. |
|
301M |
0.10 |
4.55.5 |
0.060 |
0.030 |
0.75 |
14.50 - 15.50 |
6.0 - 7.0 |
- |
- |
1.70- 1.90 |
High-strength, work-hardening stainless steel; ideal for railway coaches, structural components, and transportation industry use due to its excellent formability and toughness. |
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* Thickness of 1.27mm & below will have elongation of 20% min. |
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