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GB/T 699 25 vs IS 11169 (Part 1) 25C8

Close Alternative — 80% match based on chemical composition and mechanical property overlap.

GB/T 699 25 (GB/T 699:2015) and IS 11169 (Part 1) 25C8 (IS 11169 (Part 1):2022) are both steel grades. Both fall under the Carbon Steel category. GB/T 699 25 is typically used for hot-rolled or forged quality carbon structural steel bars up to 250 mm, while IS 11169 (Part 1) 25C8 is commonly used for cold heading and cold extrusion of parts not heat treated after cold forming; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex a). GB/T 699 25 is defined under Guobiao Standards (GB/T), originating from China, while IS 11169 (Part 1) 25C8 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, GB/T 699 25 vs IS 11169 (Part 1) 25C8 is a 80% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 80%.

Frequently Compared With GB/T 699 25:
BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32 BS 970 (Part 1) 060A40
Match Breakdown
CHEMISTRY MATCH
80%
MECHANICAL MATCH
No shared data
OVERALL
80%
Specifications
Property GB/T 699 25 IS 11169 (Part 1) 25C8
Standard GB/T 699:2015 IS 11169 (Part 1):2022
Category Carbon Steel Carbon Steel
C (%) 0.22-0.29 0.20-0.30
Si (%) 0.17-0.37 Not specified
Mn (%) 0.50-0.80 0.60-0.90
P (%) <=0.035 <=0.035
S (%) <=0.035 <=0.035
Cr (%) <=0.25 <=0.15
Ni (%) <=0.30 <=0.15
Cu (%) <=0.25 <=0.15
Mo (%) Not specified <=0.05
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GB/T 699 25 IS 11169 (Part 1) 25C8
Tensile Strength >=450 MPa Not specified
Yield Strength >=275 MPa Not specified
Elongation >=23% Not specified
Condition Normalized 25 mm sample blank, bars up to 80 mm; hardness for delivery state Not specified
Hardness, annealed (+AC) Not specified <=150 HBW
Typical Applications
GB/T 699 25
Hot-rolled or forged quality carbon structural steel bars up to 250 mm
IS 11169 (Part 1) 25C8
Cold heading and cold extrusion of parts not heat treated after cold forming; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex A)
Key Differences
Can GB/T 699 25 Be Substituted With IS 11169 (Part 1) 25C8?
GB/T 699 25 and IS 11169 (Part 1) 25C8 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
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GB/T 699 25
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IS 11169 (Part 1) 25C8
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Frequently Asked Questions
What is the difference between GB/T 699 25 and IS 11169 (Part 1) 25C8?
GB/T 699 25 specifies Si which is not specified for IS 11169 (Part 1) 25C8. IS 11169 (Part 1) 25C8 specifies Mo which is not specified for GB/T 699 25.
Can GB/T 699 25 be substituted with IS 11169 (Part 1) 25C8?
GB/T 699 25 and IS 11169 (Part 1) 25C8 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.