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GB/T 8731-2025 Y35 Steel: Specifications & Listings

GB/T 8731-2025 Y35: Y35 is a free-cutting carbon steel designed for improved machinability and productivity in automatic machining operations. Sulfur additions enhance chip breaking and reduce tool wear.

Forms: Hex Bar Category: Free Machining Steel
Grade Details
GradeGB/T 8731-2025 Y35
Standard GB/T 8731-2025
ApplicationsUsed for screws, nuts, fittings, precision turned parts, bushings, and automatic lathe components.
Most Active InNorth (Punjab)
Supply & Demand by FormSee Full Supply & Demand →
Hex Bar →
Low Activity
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
BS 970 (Part 1) 225M36 BS 970 (Part 1):1983 Close Alternative
SAE J403 1138 SAE J403:2001 Close Alternative
SAE J403 1138 SAE J403:2009 Close Alternative
SAE J403 1138 SAE J403:2014 Close Alternative
BS 970 (Part 3) 216M36 BS 970 (Part 3):1991 Close Alternative
BS 970 (Part 1) 212M36 BS 970 (Part 1):1983 Close Alternative
BS 970 (Part 1) 216M36 BS 970 (Part 1):1983 Close Alternative
SAE J403 1137 SAE J403:2001 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 Si Mn S P
0.32-0.39 0.15 max 0.70-1.00 0.20-0.35 0.07-0.12
Mechanical Properties
Tensile Strength 520-680 MPa
Yield Strength 315-420 MPa
Elongation 10-16%
Hardness 140-190 HB

Popular forms for this grade:

Hex Bar (2)

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GB/T 8731-2025 Y35 Hex Bar
2.200 MT
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GB/T 8731-2025 Y35 Hex Bar
2.500 MT
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