Grade A681 Type S5
USA UNS T41905
AISI
American Iron and Steel Institute
S5
Corresponding Standard ASTM A681-2008(R2015)
Standard Specification for Tool Steels Alloy
Classification Tool Steel
A681 Type S5 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo V More
Minimum Value 0.5 1.75 0.6 - - 0.1 0.2 0.15 Ni+Cu≤0.75
Maximum Value 0.65 2.25 1 0.03 0.03 0.5 1.35 0.35
A681 Type S5 Mechanical Properties
Heat Treatment or Condition
Hardness
HBW
Bars, thick plates, thin plates, strips, rods, wires, forgings Cold Drawing BHN
≤255
Bars, thick plates, thin plates, strips, rods, wires, forgings Annealing BHN
≤229
Bars, thick plates, thin plates, strips, rods, wires, forgings Heat Treatment HRC
≥58
Approximate Comparison Table Alloy Tool Steel
United States France
AISI NF EN/NF
S5 Y45SCD6

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