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EN 10084 20NiCrMo2-2 vs BS 970 (Part 3) 805M20

Strong Match — 92.5% match based on chemical composition and mechanical property overlap.

EN 10084 20NiCrMo2-2 (EN 10084:2008) and BS 970 (Part 3) 805M20 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. EN 10084 20NiCrMo2-2 is typically used for gears, shafts and automotive transmission components, while BS 970 (Part 3) 805M20 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (table 15). EN 10084 20NiCrMo2-2 is defined under European Standard (EN), originating from Europe, while BS 970 (Part 3) 805M20 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, EN 10084 20NiCrMo2-2 vs BS 970 (Part 3) 805M20 is a 92.5% 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 92.5%.

Frequently Compared With EN 10084 20NiCrMo2-2:
GOST 4543 12HN3A NF A35-565 100C6 UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
92.5%
MECHANICAL MATCH
No shared data
OVERALL
92.5%
Specifications
Property EN 10084 20NiCrMo2-2 BS 970 (Part 3) 805M20
Standard EN 10084:2008 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.17-0.23 0.17-0.23
Cr (%) 0.35-0.70 0.35-0.65
Mn (%) 0.65-0.95 0.60-0.95
Mo (%) 0.15-0.25 0.15-0.25
Ni (%) 0.40-0.70 0.35-0.75
P (%) <=0.025 <=0.04
S (%) <=0.035 <=0.05
Si (%) <=0.40 0.10-0.40
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 20NiCrMo2-2 BS 970 (Part 3) 805M20
Condition Soft annealed Not specified
Hardenability +H band at 1.5 mm from the quenched end: 41 to 49 HRC Not specified
Hardness Soft annealed: 212 HB max Not specified
Typical Applications
EN 10084 20NiCrMo2-2
Gears, shafts and automotive transmission components
BS 970 (Part 3) 805M20
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
Can EN 10084 20NiCrMo2-2 Be Substituted With BS 970 (Part 3) 805M20?
EN 10084 20NiCrMo2-2 and BS 970 (Part 3) 805M20 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 805M20 is often considered as a substitute for EN 10084 20NiCrMo2-2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
EN 10084 20NiCrMo2-2
Round Bar → (5 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5400–6900 mm (212.6–271.65 in)
BS 970 (Part 3) 805M20
No active listings currently.
On M-EX Right Now
EN 10084 20NiCrMo2-2
5 active listings and RFQs →
BS 970 (Part 3) 805M20
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10084 20NiCrMo2-2 and BS 970 (Part 3) 805M20?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10084 20NiCrMo2-2 be substituted with BS 970 (Part 3) 805M20?
EN 10084 20NiCrMo2-2 and BS 970 (Part 3) 805M20 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 805M20 is often considered as a substitute for EN 10084 20NiCrMo2-2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.