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ASTM A681:2008 D5 Steel: Specifications & Listings

ASTM A681:2008 D5: D5: high-carbon high-chromium cold work tool steel (UNS T30405). Specified in A681:2008.

Category: Tool & Die Steels
Grade Details
GradeASTM A681:2008 D5
Standard ASTM A681:2008
ApplicationsTools, dies and fixtures (clause 1.2)
Chemical Composition (%)
C Mn P S Si Cr V Mo Co
1.40-1.60 0.10-0.60 <=0.030 <=0.030 0.10-0.60 11.00-13.00 <=1.00 0.70-1.20 2.50-3.50
Mechanical Properties
Hardness <=255 HB
Condition Annealed (maximum Brinell hardness)

More data from ASTM A681:2008

From the standard
Maximum hardness in delivery condition 2 conditions
ConditionMaximum hardness (HB)
Annealed255
Cold drawn269
Maximum Brinell hardness (BHN).
Source: A681:2008, Table 2
Heat treatment and response to hardening hardening test conditions
Preheat temperature
1500 deg F (816 deg C)
Austenitizing, salt bath
1825 deg F (996 deg C)
Austenitizing, controlled atmosphere furnace
1850 deg F (1010 deg C)
Austenitizing time
10 to 20 min
Quench medium
Air
Tempering temperature
400 deg F (204 deg C)
Minimum hardness after treatment
61 HRC
Austenitizing temperatures are stipulated for the response to hardening test only. Time in controlled atmosphere furnaces is 10 to 20 minutes for D types.
Source: A681:2008, Table 3

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