Grade A681 Type D3
USA UNS T30403
AISI
American Iron and Steel Institute
D3
Corresponding Standard ASTM A681-2024
Tool Steels Alloy
Classification Tool Steel
A681 Type D3 Chemical Element Composition Content (%)
Component C Si Mn P S Cr W V More
Minimum Value 2 0.1 0.1 - - 11 - - Ni+Cu≤0.75
Maximum Value 2.35 0.6 0.6 0.03 0.03 13.5 1 1
A681 Type D3 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
condition of delivery Cold Drawing BHN
≤269
condition of delivery Annealing BHN
≤255
specimen Preheat to 816±14 ℃, heat to 968±5.6℃(controllable atmosphere) or 954℃(salt bath), hold for 10 to 20 min, oil cool. Temper at 204±5.6℃ once for 2 h HRC
≥61
1 Approximate Comparison Table Alloy Tool Steel 1
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
Cr12 T21200 SKD 1 SKD 1 STD 1 D3 T30403 X210Cr12 X210Cr12 1.2080 X210Cr12
X200Cr12
Х12 X210Cr12
BD3
2 Approximate Comparison Table Alloy Tool Steel 2
China Japan United States Germany France Russia United Kingdom
GB JIS ASTM DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
Cr12 SKD 1 D3 X210Cr12 1.2436 Z200C12 12 BD3
A681TypeD3 Corresponding Standards(Same grade name, different standards)

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