Grade F738M Class A1-70 302HQ
USA UNS S30433
Corresponding Standard ASTM F738M-2002
Stainless Steel Metric Bolts, Screws, and Studs
Classification Austenitic Stainless Steel
F738M Class A1-70 302HQ Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu
Minimum Value - - - - - 17 8 3
Maximum Value 0.03 1 2 0.045 0.03 19 10 4
F738M Class A1-70 302HQ Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Hardness
HBW
M1.6~M5 CW ≥700 HR(B96~C33)
M6~M20 CW ≥700 ≥450 HR(B96~C33)
>M20~M36 CW ≥550 ≥300 HR(B83~C31)
• D-nominal thread diameter

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