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IS 1570 (Part 7) 40CrMoVH vs NF A35-552 35CD4

Close Alternative — 72.3% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 7) 40CrMoVH (IS 1570 (Part 7):1992) and NF A35-552 35CD4 (NF A35-552:1986) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 7) 40CrMoVH is typically used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature, while NF A35-552 35CD4 is commonly used for gears, shafts, axles, connecting rods, high strength bolts, automotive parts. IS 1570 (Part 7) 40CrMoVH is defined under Bureau of Indian Standards (IS), originating from India, while NF A35-552 35CD4 is defined under Association Francaise de Normalisation (NF), originating from France.

As per chemical composition, IS 1570 (Part 7) 40CrMoVH vs NF A35-552 35CD4 is a 75.1% match. As per mechanical properties, the match is 66.7%. Combined, this makes them a close alternative overall at 72.3%.

Frequently Compared With IS 1570 (Part 7) 40CrMoVH:
NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 12Cr2Mo5V2H IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Mo6 UNI 11234 100Cr6 IS 4367 07Cr4Mo6 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
75.1%
MECHANICAL MATCH
66.7%
OVERALL
72.3%
Specifications
Property IS 1570 (Part 7) 40CrMoVH NF A35-552 35CD4
Standard IS 1570 (Part 7):1992 NF A35-552:1986
Category Alloy Steel Alloy Steel
C (%) 0.36-0.44 0.32-0.39
Si (%) 0.10-0.35 0.15-0.40
Mn (%) 0.45-0.85 0.50-0.80
P (%) <=0.030 <=0.035
S (%) <=0.03 <=0.035
Cr (%) 0.9-1.2 0.90-1.20
Mo (%) 0.55-0.75 0.15-0.30
V (%) 0.25-0.35 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 IS 1570 (Part 7) 40CrMoVH NF A35-552 35CD4
Tensile Strength 850-1000 MPa 850-1000 MPa
Yield Strength >=700 MPa (0.2 % proof stress) >=650 MPa
Elongation >=14% >=14%
Condition Bars, forgings, Q+T, thickness up to 100 (first row of Table 3) Not specified
Hardness Not specified 248-302 HB
Typical Applications
IS 1570 (Part 7) 40CrMoVH
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
NF A35-552 35CD4
gears, shafts, axles, connecting rods, high strength bolts, automotive parts
Key Differences
Can IS 1570 (Part 7) 40CrMoVH Be Substituted With NF A35-552 35CD4?
IS 1570 (Part 7) 40CrMoVH and NF A35-552 35CD4 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.
Forms & Sizes Available on M-EX
IS 1570 (Part 7) 40CrMoVH
No active listings currently.
NF A35-552 35CD4
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5000–6200 mm (196.85–244.09 in)
On M-EX Right Now
IS 1570 (Part 7) 40CrMoVH
0 active listings and RFQs →
NF A35-552 35CD4
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 (Part 7) 40CrMoVH and NF A35-552 35CD4?
IS 1570 (Part 7) 40CrMoVH specifies V which is not specified for NF A35-552 35CD4.
Can IS 1570 (Part 7) 40CrMoVH be substituted with NF A35-552 35CD4?
IS 1570 (Part 7) 40CrMoVH and NF A35-552 35CD4 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.