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IS 11169 (Part 1):2022 15Cr3 Steel: Specifications & Listings

IS 11169 (Part 1):2022 15Cr3: Cold heading quality alloy case hardening steel 15Cr3 to IS 11169 (Part 1):2022, for parts case hardened after cold heading or cold extrusion, supplied as wire rod, bars or wire of 2 to 100 mm. Maximum hardness in the annealed condition is 140 HBW.

Category: Alloy Steel
Grade Details
GradeIS 11169 (Part 1):2022 15Cr3
Standard IS 11169 (Part 1):2022
ApplicationsCold heading and cold extrusion of parts that are case hardened; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex B)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
IS 4367 15Cr3 IS 4367:1991 India 1 listing, 1 RFQ →
IS 1570 (Part 4) 15Cr3 IS 1570 (Part 4):1988 India No activity yet
IS 4432 15Cr3 IS 4432:1988 India No activity yet
IS 11169 (Part 1) 15Cr3 IS 11169 (Part 1):1984 India No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
BS 970 (Part 3) 635M15 BS 970 (Part 3):1991 Close Alternative
IS 1570 (Part 4) 16Ni3Cr2 IS 1570 (Part 4):1988 Close Alternative
BS 970 (Part 1) 635M15 BS 970 (Part 1):1983 Close Alternative
BS 970 (Part 1) 635H15 BS 970 (Part 1):1983 Close Alternative
BS 970 (Part 1) 635H15 BS 970 (Part 1):1991 Close Alternative
BS 970 (Part 1) 635M15 BS 970 (Part 1):1991 Close Alternative
IS 1570 (Part 4) 16Ni4Cr3 IS 1570 (Part 4):1988 Close Alternative
BS 970 (Part 3) 637M17 BS 970 (Part 3):1991 Close Alternative
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Cr Cu Mn Mo Ni P S Si
0.12-0.18 0.50-0.80 <=0.15 0.40-0.60 <=0.05 <=0.15 <=0.035 <=0.035 0.10-0.35
Mechanical Properties
Hardness, annealed (+AC) <=140 HBW

More data from IS 11169 (Part 1):2022

From the standard
Other composition limits from the table notes and clauses
Values
Maximum unless a range is given (ladle analysis)
Residual elements, maximum
Sn 0.020, V 0.05 percent; Cr + Ni + Cu + Sn + Mo + V together not over 0.40 percent, where not used as alloying elements
Deoxidation
Aluminium killed (clause 6.2)
Elements not listed are not added intentionally without the purchaser's agreement, except those used to finish the heat.
Source: IS 11169 (Part 1):2022, Table B.2 and its notes, clause 6.2
Hardness in the annealed condition 1 condition
Annealed (+AC), maximum
140 HBW
Brinell hardness for products delivered in the annealed condition.
Source: IS 11169 (Part 1):2022, Table B.8, clause 8.1

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