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AISI Type 304HN |
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| Category | Steel |
| Class | Stainless steel |
| Type | Austenitic nonstandard |
| Common Names | Chromium-Nickel steel |
| Designations |
United States: ASME SA240 (XM-21) , ASTM A240 , ASTM A240 (XM-21) , ASTM A276 (XM-21) , SAE 30304HN , UNS S30452
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| Composition |
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| Element | Weight % |
| C |
0.04-0.10 |
| Mn |
2.00 |
| Si |
1.00 |
| Cr |
18.0-20.0 |
| Ni |
8.0-10.5 |
| P |
0.045 |
| S |
0.03 |
| N |
0.10-0.16 |
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| Mechanical Properties |
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| Properties | Conditions |
| T (°C) | Treatment |
| Density (×1000 kg/m3) |
7.7-8.03
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25 |
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| Poisson's Ratio |
0.27-0.30 |
25 |
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| Elastic Modulus (GPa) |
190-210
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25 |
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| Tensile Strength (Mpa) |
620 |
25 |
annealed (plate) more |
| Yield Strength (Mpa) |
345 |
| Elongation (%) |
30 |
| Reduction in Area (%) |
50 |
| Hardness (HRB) |
100 (max) |
25 |
annealed (sheet, strip) more |
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