| AISI Type 634 | |
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| Category | Steel |
| Class | Stainless steel |
| Type | Precipitation-hardening nonstandard |
| Common Names | Chromium steel |
| Designations | United States: AMS 5547 , AMS 5549 , AMS 5594 , AMS 5742 , AMS 5743 , AMS 5744 , AMS 5780 , AMS 5781 , ASTM A564 , ASTM A579 , ASTM A693 , ASTM A705 , SAE J467 (AM-355) , UNS S35500 |
| Composition | |
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| Mechanical Properties | |
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| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 7.7-8.03 | 25 | |
| Poisson's Ratio | 0.27-0.30 | 25 | |
| Elastic Modulus (GPa) | 190-210 | 25 | |
| Tensile Strength (Mpa) | 1520 | 25 | subzero cooled and tempered at 455°C (sheet (0.69 mm)) more |
| Yield Strength (Mpa) | 1286 | ||
| Elongation (%) | 8 | ||
| Reduction in Area (%) | |||
| Thermal Properties | |
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| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Thermal Expansion (10-6/ºC) | 17.1 | 25-100 more | |
| Thermal Conductivity (W/m-K) | 15.1 | 38 more | |
| Electric Properties | |
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