Post Stock Login Register

BS 970 EN31 vs SAE J404 5160

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

BS 970 EN31 (BS 970:1955) and SAE J404 5160 (SAE J404:2009) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN31 is typically used for ball and roller bearings, gauges, dies, while SAE J404 5160 is commonly used for automotive leaf springs, coil springs. BS 970 EN31 is defined under British Standards (BS), originating from United Kingdom, while SAE J404 5160 is defined under SAE International, originating from United States.

As per chemical composition, BS 970 EN31 vs SAE J404 5160 is a 74.3% 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 EN31:
UNI 11234 100Cr6 NF A35-565 100C6 GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 GOST 4543 12HN3A IS 1570 (Part 4) 103Cr6 IS 4367 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
74.3%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property BS 970 EN31 SAE J404 5160
Standard BS 970:1955 SAE J404:2009
Category Alloy Steel Alloy Steel
C (%) 0.90-1.20 0.56-0.64
Si (%) 0.10-0.35 0.15-0.35
Mn (%) 0.30-0.75 0.75-1.00
Cr (%) 1.00-1.60 0.70-0.90
S (%) <=0.050 <=0.040
P (%) <=0.050 <=0.030
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 EN31 SAE J404 5160
Hardness (HB) ≤229 (softened) Not specified
Typical Applications
BS 970 EN31
Ball and roller bearings, gauges, dies
SAE J404 5160
Automotive leaf springs, coil springs
Can BS 970 EN31 Be Substituted With SAE J404 5160?
BS 970 EN31 and SAE J404 5160 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 EN31
Round Bar → (23 listings)
Diameter: 40–50 mm (1.57–1.97 in)
Length: 2500–7000 mm (98.43–275.59 in)
Flat Bar → (3 listings)
Thickness: 25–25 mm (0.98–0.98 in)
Width: 120–120 mm (4.72–4.72 in)
Length: 2500–3600 mm (98.43–141.73 in)
Hex Bar → (3 listings)
Across Flats: 50–50 mm (1.97–1.97 in)
Length: 2600–3300 mm (102.36–129.92 in)
SAE J404 5160
Round Bar → (3 listings)
Diameter: 60–60 mm (2.36–2.36 in)
Length: 5200–6400 mm (204.72–251.97 in)
On M-EX Right Now
BS 970 EN31
29 active listings and RFQs →
SAE J404 5160
3 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN31 and SAE J404 5160?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN31 be substituted with SAE J404 5160?
BS 970 EN31 and SAE J404 5160 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.