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DIN 17210 30NiCrMo2-2 vs BS 970 (Part 3) 805M20

Close Alternative — 84.5% match based on chemical composition and mechanical property overlap.

DIN 17210 30NiCrMo2-2 (DIN 17210:1986) and BS 970 (Part 3) 805M20 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. DIN 17210 30NiCrMo2-2 is typically used for nickel-chromium-molybdenum case-hardening (carburizing) steel; highly stressed gears, shafts, and transmission components requiring high core strength and wear-resistant carburized surface, 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). DIN 17210 30NiCrMo2-2 is defined under Deutsches Institut fur Normung (DIN), originating from Germany, while BS 970 (Part 3) 805M20 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, DIN 17210 30NiCrMo2-2 vs BS 970 (Part 3) 805M20 is a 84.5% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 84.5%.

Frequently Compared With DIN 17210 30NiCrMo2-2:
GB/T 3077 12Cr2Ni4A NF A35-565 100C6 GOST 4543 12HN3A UNI 11234 100Cr6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
84.5%
MECHANICAL MATCH
No shared data
OVERALL
84.5%
Specifications
Property DIN 17210 30NiCrMo2-2 BS 970 (Part 3) 805M20
Standard DIN 17210:1986 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.26-0.34 0.17-0.23
Mn (%) 0.55-0.85 0.60-0.95
Si (%) <=0.40 0.10-0.40
P (%) <=0.035 <=0.04
S (%) <=0.035 <=0.05
Cr (%) 0.35-0.65 0.35-0.65
Ni (%) 0.40-0.70 0.35-0.75
Mo (%) 0.15-0.25 0.15-0.25
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property DIN 17210 30NiCrMo2-2 BS 970 (Part 3) 805M20
Tensile Strength 880-1080 MPa Not specified
Yield Strength 685 MPa min Not specified
Elongation 10% min Not specified
Hardness 255-311 HB Not specified
Typical Applications
DIN 17210 30NiCrMo2-2
Nickel-chromium-molybdenum case-hardening (carburizing) steel; highly stressed gears, shafts, and transmission components requiring high core strength and wear-resistant carburized surface
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 DIN 17210 30NiCrMo2-2 Be Substituted With BS 970 (Part 3) 805M20?
DIN 17210 30NiCrMo2-2 and BS 970 (Part 3) 805M20 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
DIN 17210 30NiCrMo2-2
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5300–5800 mm (208.66–228.35 in)
BS 970 (Part 3) 805M20
No active listings currently.
On M-EX Right Now
DIN 17210 30NiCrMo2-2
2 active listings and RFQs →
BS 970 (Part 3) 805M20
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Frequently Asked Questions
What is the difference between DIN 17210 30NiCrMo2-2 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 DIN 17210 30NiCrMo2-2 be substituted with BS 970 (Part 3) 805M20?
DIN 17210 30NiCrMo2-2 and BS 970 (Part 3) 805M20 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.