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IS 3748:1990 T40Ni6Cr4Mo3 Steel: Specifications & Listings

IS 3748:1990 T40Ni6Cr4Mo3: T40Ni6Cr4Mo3: cold work tool and die steel. Specified in IS 3748:1990.

Category: Tool & Die Steels
Grade Details
GradeIS 3748:1990 T40Ni6Cr4Mo3
Standard IS 3748:1990
ApplicationsCold work tools and dies for blanking, trimming, chipping and shearing
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
IS 1570 (Part 6) T40Ni6Cr4Mo3 IS 1570 (Part 6):1996 India No activity yet
IS 3748 T55NiCrMo3 IS 3748:1990 India No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
IS 1570 (Part 6) T40Ni6Cr4Mo3 IS 1570 (Part 6):1996 Strong Match
IS 3748 T55NiCrMo3 IS 3748:1990 Strong Match
IS 3748 T40Ni10Cr3Mo6 IS 3748:1990 Close Alternative
IS 1570 (Part 6) T55Ni6Cr3Mo3 IS 1570 (Part 6):1996 Close Alternative
IS 3748 T31Ni10Cr3Mo6 IS 3748:1990 Close Alternative
IS 1570 (Part 6) T40Ni10Cr3Mo6 IS 1570 (Part 6):1996 Close Alternative
IS 1570 (Part 6) T50NiCrMo4 IS 1570 (Part 6):1996 Related Material
IS 1570 (Part 6) T30Ni10Cr3Mo6 IS 1570 (Part 6):1996 Related Material
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Si Mn Ni Cr Mo S P
0.35-0.45 0.10-0.35 0.40-0.70 1.25-1.75 0.90-1.30 0.20-0.35 <=0.035 <=0.035
Mechanical Properties
Hardness <=255 HB
Condition Annealed (maximum Brinell hardness)

More data from IS 3748:1990

From the standard
Maximum hardness in annealed condition 1 condition
ConditionMaximum hardness (HB)
Annealed255
Brinell hardness tested per IS 1500; steels are supplied annealed unless specified otherwise.
Source: IS 3748:1990, Clause 9.1

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