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IS 11169 (Part 1):2022 38Cr4BT Steel: Specifications & Listings

IS 11169 (Part 1):2022 38Cr4BT: Cold heading quality boron alloyed steel 38Cr4BT to IS 11169 (Part 1):2022 for quenching and tempering 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 200 HBW.

Category: Alloy Steel
Grade Details
GradeIS 11169 (Part 1):2022 38Cr4BT
Standard IS 11169 (Part 1):2022
ApplicationsCold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex C)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
IS 1570 (Part 4) 38Cr4BT IS 1570 (Part 4):1988 India No activity yet
IS 11169 (Part 1) 38Cr4Mn2BT IS 11169 (Part 1):1984 India No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
IS 11169 (Part 1) 38Cr4Mn2BT IS 11169 (Part 1):1984 Strong Match
IS 1570 (Part 4) 38Cr4BT IS 1570 (Part 4):1988 Strong Match
IS 11169 (Part 1) 40Cr4 IS 11169 (Part 1):1984 Close Alternative
BS 970 (Part 3) 530M40 BS 970 (Part 3):1991 Close Alternative
BS 970 (Part 1) 530A36 BS 970 (Part 1):1983 Close Alternative
BS 970 (Part 1) 530H36 BS 970 (Part 1):1983 Close Alternative
BS 970 (Part 1) 530M40 BS 970 (Part 1):1983 Close Alternative
IS 1570 (Part 4) 35C8BT IS 1570 (Part 4):1988 Close Alternative
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
B C Cr Cu Mn Mo P S Si
0.0005-0.003 0.35-0.40 0.95-1.15 <=0.15 0.30-0.50 <=0.05 <=0.035 <=0.035 0.15-0.30
Mechanical Properties
Hardness, annealed (+AC) <=200 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
Aluminium
0.020 to 0.050 percent may be added to improve cold heading
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 C.3 and its notes, clause 6.2
Hardness in the annealed condition 1 condition
Annealed (+AC), maximum
200 HBW
Brinell hardness for products delivered in the annealed condition.
Source: IS 11169 (Part 1):2022, Table C.8, clause 8.1

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