Grade A681 Type A10
USA UNS T30110
AISI
American Iron and Steel Institute
A10
Corresponding Standard ASTM A681-2024
Tool Steels Alloy
Classification Tool Steel
A681 Type A10 Chemical Element Composition Content (%)
Component C Si Mn P S Ni Mo More
Minimum Value 1.25 1 1.6 - - 1.55 1.25 Ni+Cu≤0.75
Maximum Value 1.5 1.5 2.1 0.03 0.03 2.05 1.75
A681 Type A10 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
condition of delivery Cold Drawing BHN
≤285
condition of delivery Annealing BHN
≤269
specimen Preheat at 649±14 ℃, heat at 816±5.6℃(controlled atmosphere) or 802℃(salt bath), hold for 5 to 15 min, air cool. Temper at 204±5.6℃ once for 2 h HRC
≥59
A681TypeA10 Corresponding Standards(Same grade name, different standards)

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