300 Series—Austenitic Chromium-Nickel Alloys
| Type 301 | Highly ductile, for formed products. Also hardens rapidly during mechanical working. Good weldability. Better wear resistance and fatigue strength than 304. |
|---|---|
| Type 302 | Same corrosion resistance as 304, with slightly higher strength due to additional carbon. |
| Type 303 | Easier machining version of 304 via addition of sulfur and phosphorus. Also referred to as "A1" in accordance with International Organization for Standardization ISO 3506 |
| Type 304 | The most common grade; the classic 18/8 stainless steel. Also referred to as "A2" in accordance with International Organization for Standardization ISO 3506. |
| Type 309 | Better temperature resistance than 304 |
| Type 316 | The second most common grade (after 304); for food and surgical stainless steel uses; Alloy addition of molybdenum prevents specific forms of corrosion. |
| Type 321 | Similar to 304 but lower risk of weld decay due to addition of titanium. See also 347 with addition of niobium for desensitization during welding. |
400 Series—Ferritic and Martensitic Chromium Alloys
| Type 408 | heat-resistant; poor corrosion resistance; 11% Chromium, 8% Nickel. |
|---|---|
| Type 409 | cheapest type; used for automobile exhausts; ferritic (iron/chromium only). |
| Type 410 | martensitic (high-strength iron/chromium). Wear resistant, but less corrosion resistant. |
| Type 416 | easy to machine due to additional sulfur |
| Type 420 | "Cutlery Grade" martensitic; similar to the Brearley's original "rustless steel". Also known as "surgical steel". Excellent polishability. |
| Type 430 | decorative, e.g., for automotive trim; ferritic. Good formability, but with reduced temperature and corrosion resistance. |
| Type 440 | a higher grade of cutlery steel, with more carbon in it, which allows for much better edge retention when the steel is heat treated properly. |
Stainless Steel Grades Chemical Composition
| Grade | Mark | Chemical Compositions(%) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Cr | Ni | Mn | P | S | Mo | Si | Cu | N | Others | ||
| 201 |
1Cr17Mn 6Ni5N |
≤0.15 |
16.00- 18.00 |
3.50- 5.50 |
5.50－ 7.50 |
≤0.060 | ≤0.03 | - | ≤1.00 | - | ≤0.25 | - |
| 201L |
03Cr17Mn 6Ni5N |
≤0.03 |
16.00- 18.00 |
3.50- 5.50 |
5.50－ 7.50 |
≤0.060 | ≤0.03 | ≤1.00 | ≤0.25 | |||
| 202 |
1Cr18Mn 8Ni5N |
≤0.15 |
17.00- 19.00 |
4.00- 6.00 |
7.50- 10.00 |
≤0.060 | ≤0.03 | ≤1.00 | - | ≤0.25 | - | |
| 204 |
03Cr16Mn 8Ni2N |
≤0.03 |
15.00- 17.00 |
1.50- 3.50 |
7.00- 9.00 |
0.15- 0.30 |
||||||
| China |
1Cr18Mn10Ni 5Mo3N |
≤0.10 |
17.00- 19.00 |
4.00- 6.00 |
8.50- 12.00 |
2.8- 3.5 |
0.20- 0.30 |
|||||
| Russia |
2Cr13Mn 9Ni4 |
0.15- 0.25 |
12.00- 14.00 |
3.70- 5.00 |
8.00- 10.00 |
|||||||
| China |
2Cr15Mn 15Ni2N |
0.15- 0.25 |
14.00- 16.00 |
1.50- 3.00 |
14.00- 16.00 |
0.15- 0.30 |
||||||
|
1Cr18Mn 10Ni5Mo3N |
≤0.15 |
17.00- 19.00 |
4.00- 6.00 |
8.50- 12.00 |
≤0.060 | ≤0.03 |
2.8- 3.5 |
≤1.00 | - |
0.20- 0.30 |
- | |
| 301 | 1Cr17Ni7 | ≤0.15 |
16.00- 18.00 |
6.00- 8.00 |
≤2.00 | ≤0.065 | ≤0.03 | - | ≤1.00 | - | - | - |
| 302 | 1Cr18Ni9 | ≤0.15 |
17.00- 19.00 |
8.00- 10.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | - |
| 303 | Y1Cr18Ni9 | ≤0.15 |
17.00- 19.00 |
8.00- 10.00 |
≤2.00 | ≤0.20 | ≤0.03 | 1) | ≤1.00 | - | - | - |
| 303se |
Y1Cr18Ni 9Se |
≤0.15 |
17.00- 19.00 |
8.00- 10.00 |
≤2.00 | ≤0.20 | ≤0.03 | - | ≤1.00 | - | - | Se≥0.15 |
| 304 | 0Cr18Ni9 | ≤0.07 |
17.00- 19.00 |
8.00- 10.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | - |
| 304L | 00Cr19Ni10 | ≤0.03 |
18.00- 20.00 |
8.00- 10.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | - |
| 304N1 | 0Cr19Ni9N | ≤0.08 |
18.00- 20.00 |
7.00- 10.50 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - |
0.10- 0.25 |
- |
| 304N2 |
0Cr18Ni 10NbN |
≤0.08 |
18.00- 20.00 |
7.00- 10.50 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - |
0.15- 0.30 |
Nb≤0.15 |
| 304LN |
00Cr18Ni 10N |
≤0.03 |
17.00- 19.00 |
8.50- 11.50 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - |
0.12- 0.22 |
- |
| 305 | 1Cr18Ni12 | ≤0.12 |
17.00- 19.00 |
10.50- 13.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | |
| 309S | 0Cr23Ni13 | ≤0.08 |
22.00- 24.00 |
12.00- 15.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | |
| 310S | 0Cr25Ni20 | ≤0.08 |
24.00- 26.00 |
19.00- 22.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | - |
| 316 |
0Cr17Ni 12Mo2 |
≤0.08 |
16.00- 18.50 |
10.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
2.00- 3.00 |
≤1.00 | - | - | - |
|
1Cr18Ni 12Mo2Ti6) |
≤0.12 |
16.00- 19.00 |
10.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
1.80- 2.50 |
≤1.00 | - | - |
Ti5 (C%-0.02)~ 0.08 |
|
|
0Cr18Ni 12Mo2Ti |
≤0.08 |
16.00- 19.00 |
10.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
1.80- 2.50 |
≤1.00 | - | - |
Ti5*C%- 0.70 |
|
| 316L |
00Cr17Ni 14Mo2 |
≤0.03 |
16.00- 18.00 |
12.00- 15.00 |
≤2.00 | ≤0.035 | ≤0.03 |
2.00- 3.00 |
≤1.00 | - | - | - |
| 316N |
0Cr17Ni 12Mo2N |
≤0.08 |
16.00- 18.00 |
10.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
2.00- 3.00 |
≤1.00 | - | - | - |
| 316N |
00Cr17Ni 13Mo2N |
≤0.03 |
16.00- 18.50 |
10.50- 14.50 |
≤2.00 | ≤0.035 | ≤0.03 |
2.00- 3.00 |
≤1.00 | - | - | - |
| 316J1 |
0Cr18Ni 12Mo2Cu2 |
≤0.08 |
17.00- 19.00 |
10.50- 14.50 |
≤2.00 | ≤0.035 | ≤0.03 |
1.20- 2.75 |
≤1.00 |
1.00- 2.50 |
- | - |
| 316J1L |
00Cr18Ni 14Mo2Cu2 |
≤0.03 |
17.00- 19.00 |
12.00- 16.00 |
≤2.00 | ≤0.035 | ≤0.03 |
1.20- 2.75 |
≤1.00 |
1.00- 2.50 |
- | - |
| 317 |
0Cr19Ni 13Mo3 |
≤0.12 |
18.00- 20.00 |
11.00- 15.00 |
≤2.00 | ≤0.035 | ≤0.03 |
3.00- 4.00 |
≤1.00 | - | - | - |
| 317L |
00Cr19Ni 13Mo3 |
≤0.08 |
18.00- 20.00 |
11.00- 15.00 |
≤2.00 | ≤0.035 | ≤0.03 |
3.00- 4.00 |
≤1.00 | - | - | - |
|
1Cr18Ni 12Mo3Ti6) |
≤0.12 |
16.00- 19.00 |
11.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
2.50- 3.50 |
≤1.00 | - | - |
Ti5 (C%-0.02)~ 0.08 |
|
|
0Cr18Ni 12Mo3Ti |
≤0.08 |
16.00- 19.00 |
11.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
2.50- 3.50 |
≤1.00 | - | - |
Ti5*C%- 0.70 |
|
| 317J1 |
0Cr18Ni 16Mo5 |
≤0.04 |
16.00- 19.00 |
15.00- 17.00 |
≤2.00 | ≤0.035 | ≤0.03 |
4.00- 6.00 |
≤1.00 | - | - | - |
| 321 | 1Cr18Ni9Ti6) | ≤0.12 |
17.00- 19.00 |
8.00- 11.00 |
≤2.00 | ≤0.035 | ≤0.030 | - | ≤1.00 | - | - |
Ti5 (C%-0.02)~ 0.08 |
| 0Cr18Ni10Ti | ≤0.08 |
17.00- 19.00 |
9.00- 12.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | Ti≥5*C% | |
| 347 | 0Cr18Ni11Nb | ≤0.08 |
17.00- 19.00 |
9.00- 13.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | Nb≥10*C% |
| XM7 | 0Cr18Ni9Cu3 | ≤0.08 |
17.00- 19.00 |
8.50- 10.50 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 |
3.00- 4.00 |
- | - |
| XM15J1 | 0Cr18Ni13Si4 | ≤0.08 |
15.00- 20.00 |
11.50- 15.00 |
≤2.00 | ≤0.035 | ≤0.03 | - |
3.00- 5.00 |
- | 2) | |
