DIN EN ISO 4957 1.2379 vs IS 1570 (Part 7) 40CrMoH
Related Material — 65% match
based on chemical composition and mechanical property overlap.
DIN EN ISO 4957 1.2379 (DIN EN ISO 4957:2018-11) and IS 1570 (Part 7) 40CrMoH (IS 1570 (Part 7):1992) are both steel grades.
DIN EN ISO 4957 1.2379 is classified under Tool & Die Steels, while IS 1570 (Part 7) 40CrMoH is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below.
DIN EN ISO 4957 1.2379 is typically used for blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies, while IS 1570 (Part 7) 40CrMoH is commonly used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature.
DIN EN ISO 4957 1.2379 is defined under European Standard (EN), originating from Europe, while IS 1570 (Part 7) 40CrMoH is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, DIN EN ISO 4957 1.2379 vs IS 1570 (Part 7) 40CrMoH is a 66.4% 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%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
DIN EN ISO 4957 1.2379
IS 1570 (Part 7) 40CrMoH
Hardness (annealed)
≤255 HB
Not specified
Hardness (hardened)
58–62 HRC
Not specified
Compressive Strength
2600 MPa
Not specified
Tensile Strength
Not specified
850-1000 MPa
Yield Strength
Not specified
>=635 MPa (0.2 % proof stress)
Elongation
Not specified
>=14%
Condition
Not specified
Bars, forgings, Q+T, thickness up to 200 (first row of Table 3)
Typical Applications
DIN EN ISO 4957 1.2379
Blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies
IS 1570 (Part 7) 40CrMoH
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
Different category: DIN EN ISO 4957 1.2379 is Tool & Die Steels, IS 1570 (Part 7) 40CrMoH is Alloy Steel.
DIN EN ISO 4957 1.2379 specifies V which is not specified for IS 1570 (Part 7) 40CrMoH.
Can DIN EN ISO 4957 1.2379 Be Substituted With IS 1570 (Part 7) 40CrMoH?
DIN EN ISO 4957 1.2379 and IS 1570 (Part 7) 40CrMoH 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.
What is the difference between DIN EN ISO 4957 1.2379 and IS 1570 (Part 7) 40CrMoH?
Different category: DIN EN ISO 4957 1.2379 is Tool & Die Steels, IS 1570 (Part 7) 40CrMoH is Alloy Steel. DIN EN ISO 4957 1.2379 specifies V which is not specified for IS 1570 (Part 7) 40CrMoH.
Can DIN EN ISO 4957 1.2379 be substituted with IS 1570 (Part 7) 40CrMoH?
DIN EN ISO 4957 1.2379 and IS 1570 (Part 7) 40CrMoH 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.