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GB/T 699 70Mn vs IS 1570 (Part 5) X15Cr16Ni2

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

GB/T 699 70Mn (GB/T 699:2015) and IS 1570 (Part 5) X15Cr16Ni2 (IS 1570 (Part 5):1985) are both steel grades. GB/T 699 70Mn is classified under Carbon Steel, while IS 1570 (Part 5) X15Cr16Ni2 is classified under Stainless Steel — a different category, which is worth noting alongside the chemistry match below. GB/T 699 70Mn is defined under Guobiao Standards (GB/T), originating from China, while IS 1570 (Part 5) X15Cr16Ni2 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, GB/T 699 70Mn vs IS 1570 (Part 5) X15Cr16Ni2 is a 62.2% match. As per mechanical properties, the match is 100%. Combined, this makes them a related material overall at 65%.

Frequently Compared With GB/T 699 70Mn:
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
62.2%
MECHANICAL MATCH
100%
OVERALL
65%
Specifications
Property GB/T 699 70Mn IS 1570 (Part 5) X15Cr16Ni2
Standard GB/T 699:2015 IS 1570 (Part 5):1985
Category Carbon Steel Stainless Steel
C (%) 0.67-0.75 0.10-0.20
Si (%) 0.17-0.37 <=1.0
Mn (%) 0.90-1.20 <=1.0
P (%) <=0.035 <=0.045
S (%) <=0.035 <=0.030
Cr (%) <=0.25 15.0-17.0
Ni (%) <=0.30 1.25-2.50
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 70Mn IS 1570 (Part 5) X15Cr16Ni2
Tensile Strength >=785 MPa Not specified
Yield Strength >=450 MPa Not specified
Elongation >=8% Not specified
Hardness <=285 HB (as delivered, not heat treated) <=285 HB
Condition Normalized 25 mm sample blank, bars up to 80 mm; hardness for delivery state Annealed, quenched or solution treated plates, sheets and strips (Table 2)
Typical Applications
GB/T 699 70Mn
Hot-rolled or forged quality carbon structural steel bars up to 250 mm
IS 1570 (Part 5) X15Cr16Ni2
Not documented
Key Differences
Can GB/T 699 70Mn Be Substituted With IS 1570 (Part 5) X15Cr16Ni2?
GB/T 699 70Mn and IS 1570 (Part 5) X15Cr16Ni2 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 70Mn
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IS 1570 (Part 5) X15Cr16Ni2
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Frequently Asked Questions
What is the difference between GB/T 699 70Mn and IS 1570 (Part 5) X15Cr16Ni2?
Different category: GB/T 699 70Mn is Carbon Steel, IS 1570 (Part 5) X15Cr16Ni2 is Stainless Steel. GB/T 699 70Mn specifies Cu which is not specified for IS 1570 (Part 5) X15Cr16Ni2.
Can GB/T 699 70Mn be substituted with IS 1570 (Part 5) X15Cr16Ni2?
GB/T 699 70Mn and IS 1570 (Part 5) X15Cr16Ni2 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.