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DIN 17210 30NiCrMo2-2 vs GB/T 3077 12Cr2Ni4A

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

DIN 17210 30NiCrMo2-2 (DIN 17210:1986) and GB/T 3077 12Cr2Ni4A (GB/T 3077-2015) 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 GB/T 3077 12Cr2Ni4A is commonly used for used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.. DIN 17210 30NiCrMo2-2 is defined under Deutsches Institut fur Normung (DIN), originating from Germany, while GB/T 3077 12Cr2Ni4A is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, DIN 17210 30NiCrMo2-2 vs GB/T 3077 12Cr2Ni4A is a 56% match. As per mechanical properties, the match is 8.3%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With DIN 17210 30NiCrMo2-2:
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) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 103Cr4 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
56%
MECHANICAL MATCH
8.3%
OVERALL
35%
Specifications
Property DIN 17210 30NiCrMo2-2 GB/T 3077 12Cr2Ni4A
Standard DIN 17210:1986 GB/T 3077-2015
Category Alloy Steel Alloy Steel
C (%) 0.26-0.34 0.10-0.15
Mn (%) 0.55-0.85 0.30-0.60
Si (%) <=0.40 0.17-0.37
P (%) <=0.035 0.025 max
S (%) <=0.035 0.025 max
Cr (%) 0.35-0.65 1.25-1.65
Ni (%) 0.40-0.70 3.25-3.75
Mo (%) 0.15-0.25 Not specified
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 GB/T 3077 12Cr2Ni4A
Tensile Strength 880-1080 MPa 980-1180 MPa
Yield Strength 685 MPa min 785-980 MPa
Elongation 10% min 10-14%
Hardness 255-311 HB 58-62 HRC (case)
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
GB/T 3077 12Cr2Ni4A
Used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.
Key Differences
Can DIN 17210 30NiCrMo2-2 Be Substituted With GB/T 3077 12Cr2Ni4A?
DIN 17210 30NiCrMo2-2 and GB/T 3077 12Cr2Ni4A 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.
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)
GB/T 3077 12Cr2Ni4A
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5000–6600 mm (196.85–259.84 in)
On M-EX Right Now
DIN 17210 30NiCrMo2-2
2 active listings and RFQs →
GB/T 3077 12Cr2Ni4A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between DIN 17210 30NiCrMo2-2 and GB/T 3077 12Cr2Ni4A?
DIN 17210 30NiCrMo2-2 specifies Mo which is not specified for GB/T 3077 12Cr2Ni4A.
Can DIN 17210 30NiCrMo2-2 be substituted with GB/T 3077 12Cr2Ni4A?
DIN 17210 30NiCrMo2-2 and GB/T 3077 12Cr2Ni4A 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.