Post Stock Login Register

EN 10084 18CrMo4 vs IS 1570 (Part 4) 21Cr4Mo2

Strong Match — 86.1% match based on chemical composition and mechanical property overlap.

EN 10084 18CrMo4 (EN 10084:2008) and IS 1570 (Part 4) 21Cr4Mo2 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. EN 10084 18CrMo4 is defined under European Standard (EN), originating from Europe, while IS 1570 (Part 4) 21Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, EN 10084 18CrMo4 vs IS 1570 (Part 4) 21Cr4Mo2 is a 86.1% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 86.1%.

Frequently Compared With EN 10084 18CrMo4:
IS 1570 (Part 7) 12Cr4Mo5H NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
86.1%
MECHANICAL MATCH
No shared data
OVERALL
86.1%
Specifications
Property EN 10084 18CrMo4 IS 1570 (Part 4) 21Cr4Mo2
Standard EN 10084:2008 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.15-0.21 <=0.26
Cr (%) 0.90-1.20 0.90-1.20
Mn (%) 0.60-0.90 0.60-0.90
Mo (%) 0.15-0.25 0.15-0.30
P (%) <=0.025 Not specified
S (%) <=0.035 Not specified
Si (%) <=0.40 0.10-0.35
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property EN 10084 18CrMo4 IS 1570 (Part 4) 21Cr4Mo2
Condition Soft annealed Sheet and strip, hardened and tempered or cold rolled and tempered
Hardenability +H band at 1.5 mm from the quenched end: 39 to 47 HRC Not specified
Hardness Soft annealed: 207 HB max Not specified
Tensile Strength Not specified 790-990 MPa
Yield Strength Not specified >=610 MPa
Typical Applications
EN 10084 18CrMo4
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
IS 1570 (Part 4) 21Cr4Mo2
Not documented
Key Differences
Can EN 10084 18CrMo4 Be Substituted With IS 1570 (Part 4) 21Cr4Mo2?
EN 10084 18CrMo4 and IS 1570 (Part 4) 21Cr4Mo2 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 4) 21Cr4Mo2 is often considered as a substitute for EN 10084 18CrMo4 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
EN 10084 18CrMo4
0 active listings and RFQs →
IS 1570 (Part 4) 21Cr4Mo2
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10084 18CrMo4 and IS 1570 (Part 4) 21Cr4Mo2?
EN 10084 18CrMo4 specifies P, S which are not specified for IS 1570 (Part 4) 21Cr4Mo2.
Can EN 10084 18CrMo4 be substituted with IS 1570 (Part 4) 21Cr4Mo2?
EN 10084 18CrMo4 and IS 1570 (Part 4) 21Cr4Mo2 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 4) 21Cr4Mo2 is often considered as a substitute for EN 10084 18CrMo4 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.