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DIN 17200 30NiCr11 vs BS 970 (Part 3) 637M17

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

DIN 17200 30NiCr11 (DIN 17200:1986) and BS 970 (Part 3) 637M17 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. DIN 17200 30NiCr11 is typically used for used in heavy-duty gears, crankshafts, aircraft parts, shafts, and connecting rods., while BS 970 (Part 3) 637M17 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 17200 30NiCr11 is defined under Deutsches Institut fur Normung (DIN), originating from Germany, while BS 970 (Part 3) 637M17 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, DIN 17200 30NiCr11 vs BS 970 (Part 3) 637M17 is a 76.4% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With DIN 17200 30NiCr11:
GB/T 3077 12Cr2Ni4A UNI 11234 100Cr6 NF A35-565 100C6 GOST 4543 12HN3A 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
76.4%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property DIN 17200 30NiCr11 BS 970 (Part 3) 637M17
Standard DIN 17200:1986 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.27-0.34 0.14-0.20
Si (%) 0.10-0.40 0.10-0.40
Mn (%) 0.40-0.70 0.60-0.90
Ni (%) 2.50-3.00 0.85-1.25
Cr (%) 0.60-1.00 0.60-1.00
P (%) 0.025 max <=0.04
S (%) 0.035 max <=0.05
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property DIN 17200 30NiCr11 BS 970 (Part 3) 637M17
Tensile Strength 900-1100 MPa Not specified
Yield Strength 700 MPa min Not specified
Elongation 10-13% Not specified
Hardness 260-320 HB Not specified
Typical Applications
DIN 17200 30NiCr11
Used in heavy-duty gears, crankshafts, aircraft parts, shafts, and connecting rods.
BS 970 (Part 3) 637M17
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 17200 30NiCr11 Be Substituted With BS 970 (Part 3) 637M17?
DIN 17200 30NiCr11 and BS 970 (Part 3) 637M17 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 17200 30NiCr11
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6500–6800 mm (255.91–267.72 in)
BS 970 (Part 3) 637M17
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On M-EX Right Now
DIN 17200 30NiCr11
2 active listings and RFQs →
BS 970 (Part 3) 637M17
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Frequently Asked Questions
What is the difference between DIN 17200 30NiCr11 and BS 970 (Part 3) 637M17?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can DIN 17200 30NiCr11 be substituted with BS 970 (Part 3) 637M17?
DIN 17200 30NiCr11 and BS 970 (Part 3) 637M17 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.