Post Stock Login Register

BS 970 EN36 vs BS 970 (Part 1) 637H17

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

BS 970 EN36 (BS 970:1955) and BS 970 (Part 1) 637H17 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN36 is typically used for case hardened gears, cams, shafts, while BS 970 (Part 1) 637H17 is commonly used for case hardening steel (section four). BS 970 EN36 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 637H17 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN36 vs BS 970 (Part 1) 637H17 is a 78.3% 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 BS 970 EN36:
NF A35-565 100C6 GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
78.3%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property BS 970 EN36 BS 970 (Part 1) 637H17
Standard BS 970:1955 BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) 0.14–0.20 0.14-0.20
Si (%) 0.10–0.35 Not specified
Mn (%) 0.30–0.60 0.60-0.90
Cr (%) 0.60–1.10 0.60-1.00
Ni (%) 3.00–3.75 0.85-1.25
S (%) ≤0.040 Not specified
P (%) ≤0.035 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 BS 970 EN36 BS 970 (Part 1) 637H17
Tensile Strength 775–930 MPa Not specified
Yield Strength ≥585 MPa Not specified
Elongation ≥15% Not specified
Case Hardness HRC 58–62 Not specified
Typical Applications
BS 970 EN36
Case hardened gears, cams, shafts
BS 970 (Part 1) 637H17
Case hardening steel (section four)
Key Differences
Can BS 970 EN36 Be Substituted With BS 970 (Part 1) 637H17?
BS 970 EN36 and BS 970 (Part 1) 637H17 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
BS 970 EN36
Round Bar → (8 listings)
Diameter: 40–75 mm (1.57–2.95 in)
Length: 4800–6500 mm (188.98–255.91 in)
Hex Bar → (3 listings)
Across Flats: 55–55 mm (2.17–2.17 in)
Length: 2700–3500 mm (106.3–137.8 in)
Forging → (3 listings)
Diameter: 150–150 mm (5.91–5.91 in)
Length: 500–1900 mm (19.69–74.8 in)
BS 970 (Part 1) 637H17
No active listings currently.
On M-EX Right Now
BS 970 EN36
14 active listings and RFQs →
BS 970 (Part 1) 637H17
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN36 and BS 970 (Part 1) 637H17?
BS 970 EN36 specifies Si, S, P which are not specified for BS 970 (Part 1) 637H17.
Can BS 970 EN36 be substituted with BS 970 (Part 1) 637H17?
BS 970 EN36 and BS 970 (Part 1) 637H17 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.