Custom 455 stainless resists staining in normal air atmospheres, and shows no corrosion in fresh water. Tests in 5% salt spray at 95°F (35°C) and in 5% ferric chloride at room temperature have demonstrated good resistance to pitting and rusting.
Laboratory tests in a variety of mild chemical environments have shown that the level of general corrosion resistance is superior to that of the 12% chromium steels (Type 410) and approaches that of the 17% chromium steels (Type 430). In most tests there was no significant effect of aging temperature on corrosion resistance. Hydrogen embrittlement tests in 5% acetic acid saturated with H2S at room temperature show the same degree of susceptibility as other high-strength martensitic stainless steels.
Specifications
• SASTM A564 UNS S45500(XM-16)
• SAMS 5617
• SASTM F 899(XM-16)
Alloy 17-4 PH Material Available Forms.
Coil
• Sheet
• Strip
• Foil
Wire
• Profile (Shaped Wire)
• Round
• Flat
Chemical composition
| Element | C | Mn | P | S | Si | Cr | Ni | Mo | Ti | Cu |
| Weight(%) | 0.03 max | 0.50 max | 0.015 max | 0.015 max | 0.50 max | 11.00~12.50 | 7.50~9.50 | 0.50 max | 0.90~1.40 | 1.50~2.50 |
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