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GB/T 699 85 vs IS 1570 (Part 4) 15Cr6Ni6

Related Material — 65% match based on chemical composition and mechanical property overlap.

GB/T 699 85 (GB/T 699:2015) and IS 1570 (Part 4) 15Cr6Ni6 (IS 1570 (Part 4):1988) are both steel grades. GB/T 699 85 is classified under Carbon Steel, while IS 1570 (Part 4) 15Cr6Ni6 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. GB/T 699 85 is defined under Guobiao Standards (GB/T), originating from China, while IS 1570 (Part 4) 15Cr6Ni6 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, GB/T 699 85 vs IS 1570 (Part 4) 15Cr6Ni6 is a 65% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 65%.

Frequently Compared With GB/T 699 85:
BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 060A40
Match Breakdown
CHEMISTRY MATCH
65%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property GB/T 699 85 IS 1570 (Part 4) 15Cr6Ni6
Standard GB/T 699:2015 IS 1570 (Part 4):1988
Category Carbon Steel Alloy Steel
C (%) 0.82-0.90 0.12-0.18
Si (%) 0.17-0.37 0.15-0.35
Mn (%) 0.50-0.80 0.40-0.60
P (%) <=0.035 Not specified
S (%) <=0.035 Not specified
Cr (%) <=0.25 1.40-1.70
Ni (%) <=0.30 1.40-1.70
Cu (%) <=0.25 Not specified
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 85 IS 1570 (Part 4) 15Cr6Ni6
Tensile Strength >=1130 MPa Not specified
Yield Strength >=980 MPa Not specified
Elongation >=6% Not specified
Hardness <=302 HB (as delivered, not heat treated) Not specified
Condition Quenched and tempered sample (with working allowance), bars up to 80 mm; hardness for delivery state Not specified
Typical Applications
GB/T 699 85
Hot-rolled or forged quality carbon structural steel bars up to 250 mm
IS 1570 (Part 4) 15Cr6Ni6
Not documented
Key Differences
Can GB/T 699 85 Be Substituted With IS 1570 (Part 4) 15Cr6Ni6?
GB/T 699 85 and IS 1570 (Part 4) 15Cr6Ni6 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
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GB/T 699 85
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IS 1570 (Part 4) 15Cr6Ni6
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Frequently Asked Questions
What is the difference between GB/T 699 85 and IS 1570 (Part 4) 15Cr6Ni6?
Different category: GB/T 699 85 is Carbon Steel, IS 1570 (Part 4) 15Cr6Ni6 is Alloy Steel. GB/T 699 85 specifies P, S, Cu which are not specified for IS 1570 (Part 4) 15Cr6Ni6.
Can GB/T 699 85 be substituted with IS 1570 (Part 4) 15Cr6Ni6?
GB/T 699 85 and IS 1570 (Part 4) 15Cr6Ni6 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.