Stainless Steel Grade (Standard: ASTM A 276 / ASTM A 484 )
Austenitic Stainless Steels
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301, 301L, 301LN
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High strength for roll formed structural components
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302HQ
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Low work hardening rate grade for cold heading fasteners
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303, 303Se
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Free-machining bar grades
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304, 304L, 304H
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Standard 18/8 grades
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310, 310S, 310H
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High temperature resistant grades
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316, 316L, 316H
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Improved resistance to pitting corrosion in chloride environments
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321, 321H, 347
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Stabilised grades for heavy section welding and high temperature applications
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904L
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High resistance to general corrosion, pitting and stress corrosion cracking
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Ferritic Stainless Steels
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409
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Automotive exhaust grade – weld stabilised
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430, 430F
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Resistant to mildly corrosive environments
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Duplex Stainless Steels
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2304
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Duplex alternative to grade 316
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2205
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Standard duplex stainless steel - high resistance to pitting and stress corrosion
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2507
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Super duplex with very high resistance to pitting and stress corrosion
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Martensitic Stainless Steels
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410
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Standard martensitic grade for low-duty hardened applications
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416
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Free-machining bar grade
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420
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Higher hardness martensitic grade for cutlery, cutting tools and dies
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431
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High hardness and toughness grade, primarily for shafting
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440A, 440B, 440C
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Very high hardness grades used in cutting tools
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Precipitation Hardening Stainless Steel
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630 (17-4PH)
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High strength shafting grade
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