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Standard Specification for A193 B8M Class 1
| Grade | A193 B8M Class 1 |
| UNS | S31600 |
| Standard | ASTM A193/A193M-2001 |
| Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Servise | |
| Classification | Austenitic stainless steel |
| Introductions | Strength Corrosion resistance Low temperature toughness forging weldability |
| A193 B8M Class 1 Chemical Element Content (%) | ||||||||
| Constituent | C | Si | Mn | P | S | Cr | Ni | Mo |
| Min | – | – | – | – | – | 16 | 10 | 2 |
| Max | 0.08 | 1 | 2 | 0.045 | 0.03 | 18 | 14 | 3 |
| Note: Intention to add Bi, Se, Te and Pb is not allowed. | ||||||||
| A193 B8M Class 1 Mechanical properties | ||||||
| OD | Condition | Tensile Strength | Yield stress | Elongation | Reduction of area | Hardness |
| d | σb | σs | δ | ψ | HBW | |
| mm | Mpa | Mpa | % | % | ||
| All size | Carbide solution treatment | ≥515 | ≥205 | ≥30 | ≥50 | ≤223 |
| Approximate comparison table-Austenitic stainless steel | |||||||||||||||
| China | Taiwan, China | Japan | Korea | America | The International Standard Organization | Germany | France | European standard | Russia | United Kingdom | |||||
| GB | ISC | CNS | JIS | KS | ASTM | UNS | ISO | Numerical grade | DIN EN/DIN | W-Nr. | NF EN/NF | EN | Numerical grade | SS | BS EN/BS |
| 06Cr17Ni12Mo2 | S31608 | 316 | SUS 316 | STS 316 | 316 | S31600 | X5CrNiMo 17-12-2 | 4401-316-00-I | X5CrNiMo 17-12-2 | 1.4401 | Z6CND 17-11 | X5CrNiMo 17-12-2 | 1.4401 | 2347 | 316S16 |
| (X5CrNiMo 18-10) | 1.4401 | Z6CND 17-12 | X3CrNiMo 17-13-3 | 1.4436 | 2343 | 316S31 | |||||||||
| X5CrNiMo 17-13-3 | 1.4436 | ||||||||||||||
| (X5CrNiMo 18-12) | 1.4436 | ||||||||||||||
