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IS 1570 (Part 7) 21CrMoVH vs IS 1570 (Part 7) 20Cr2MoVH

Related Material — 67.6% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 7) 21CrMoVH (IS 1570 (Part 7):1992) and IS 1570 (Part 7) 20Cr2MoVH (IS 1570 (Part 7):1992) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 7) 21CrMoVH is typically used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature, while IS 1570 (Part 7) 20Cr2MoVH is commonly used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature. IS 1570 (Part 7) 21CrMoVH is defined under Bureau of Indian Standards (IS), originating from India, while IS 1570 (Part 7) 20Cr2MoVH is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, IS 1570 (Part 7) 21CrMoVH vs IS 1570 (Part 7) 20Cr2MoVH is a 68.1% match. As per mechanical properties, the match is 66.7%. Combined, this makes them a related material overall at 67.6%.

Frequently Compared With IS 1570 (Part 7) 21CrMoVH:
IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Mo6H NF A35-565 100C6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 11169 (Part 1) 10Ni5Cr4 IS 4367 07Cr4Mo6
Match Breakdown
CHEMISTRY MATCH
68.1%
MECHANICAL MATCH
66.7%
OVERALL
67.6%
Specifications
Property IS 1570 (Part 7) 21CrMoVH IS 1570 (Part 7) 20Cr2MoVH
Standard IS 1570 (Part 7):1992 IS 1570 (Part 7):1992
Category Alloy Steel Alloy Steel
C (%) 0.17-0.25 0.20-0.30
Si (%) <=0.40 0.20-0.50
Mn (%) 0.40-0.80 0.30-0.60
P (%) <=0.030 <=0.030
S (%) <=0.030 <=0.030
Cr (%) 1.2-1.50 1.5-1.80
Ni (%) <=0.60 <=0.40
Mo (%) 0.65-0.80 0.60-0.80
V (%) 0.25-0.35 0.20-0.30
Cu (%) Not specified <=0.30
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 1570 (Part 7) 21CrMoVH IS 1570 (Part 7) 20Cr2MoVH
Tensile Strength 700-850 MPa 700-850 MPa
Yield Strength >=550 MPa (0.2 % proof stress) >=550 MPa (0.2 % proof stress)
Elongation >=16% >=17%
Condition Bars, forgings, Q+T, thickness up to 250 (first row of Table 3) Bars, forgings, Q+T, thickness - (first row of Table 3)
Typical Applications
IS 1570 (Part 7) 21CrMoVH
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
IS 1570 (Part 7) 20Cr2MoVH
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
Can IS 1570 (Part 7) 21CrMoVH Be Substituted With IS 1570 (Part 7) 20Cr2MoVH?
IS 1570 (Part 7) 21CrMoVH and IS 1570 (Part 7) 20Cr2MoVH 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.
On M-EX Right Now
IS 1570 (Part 7) 21CrMoVH
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IS 1570 (Part 7) 20Cr2MoVH
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Frequently Asked Questions
What is the difference between IS 1570 (Part 7) 21CrMoVH and IS 1570 (Part 7) 20Cr2MoVH?
IS 1570 (Part 7) 20Cr2MoVH specifies Cu which is not specified for IS 1570 (Part 7) 21CrMoVH.
Can IS 1570 (Part 7) 21CrMoVH be substituted with IS 1570 (Part 7) 20Cr2MoVH?
IS 1570 (Part 7) 21CrMoVH and IS 1570 (Part 7) 20Cr2MoVH 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.