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EN 10084 20NiCrMoS6-4 vs EN 10084 17NiCrMoS6-4

Close Alternative — 81% match based on chemical composition and mechanical property overlap.

EN 10084 20NiCrMoS6-4 (EN 10084:2008) and EN 10084 17NiCrMoS6-4 (EN 10084:2008) are both steel grades. Both fall under the Alloy Steel category. EN 10084 20NiCrMoS6-4 is typically used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1), while EN 10084 17NiCrMoS6-4 is commonly used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1). EN 10084 20NiCrMoS6-4 is defined under European Standard (EN), originating from Europe, while EN 10084 17NiCrMoS6-4 is defined under European Standard (EN), originating from Europe.

As per chemical composition, EN 10084 20NiCrMoS6-4 vs EN 10084 17NiCrMoS6-4 is a 71.5% match. As per mechanical properties, the match is 100%. Combined, this makes them a close alternative overall at 81%.

Frequently Compared With EN 10084 20NiCrMoS6-4:
NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 11169 (Part 1) 10Ni5Cr4 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6
Match Breakdown
CHEMISTRY MATCH
71.5%
MECHANICAL MATCH
100%
OVERALL
81%
Specifications
Property EN 10084 20NiCrMoS6-4 EN 10084 17NiCrMoS6-4
Standard EN 10084:2008 EN 10084:2008
Category Alloy Steel Alloy Steel
C (%) 0.16-0.23 0.14-0.20
Cr (%) 0.60-0.90 0.80-1.10
Mn (%) 0.50-0.90 0.60-0.90
Mo (%) 0.25-0.35 0.15-0.25
Ni (%) 1.40-1.70 1.20-1.50
P (%) <=0.025 <=0.025
S (%) 0.020-0.040 0.020-0.040
Si (%) <=0.40 <=0.40
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 20NiCrMoS6-4 EN 10084 17NiCrMoS6-4
Condition Soft annealed Soft annealed
Hardenability +H band at 1.5 mm from the quenched end: 41 to 49 HRC +H band at 1.5 mm from the quenched end: 40 to 48 HRC
Hardness Soft annealed: 229 HB max Soft annealed: 229 HB max
Typical Applications
EN 10084 20NiCrMoS6-4
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
EN 10084 17NiCrMoS6-4
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Can EN 10084 20NiCrMoS6-4 Be Substituted With EN 10084 17NiCrMoS6-4?
EN 10084 20NiCrMoS6-4 and EN 10084 17NiCrMoS6-4 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.
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EN 10084 20NiCrMoS6-4
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EN 10084 17NiCrMoS6-4
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Frequently Asked Questions
What is the difference between EN 10084 20NiCrMoS6-4 and EN 10084 17NiCrMoS6-4?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10084 20NiCrMoS6-4 be substituted with EN 10084 17NiCrMoS6-4?
EN 10084 20NiCrMoS6-4 and EN 10084 17NiCrMoS6-4 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.