BS 970 EN353 vs BS 970 EN363

Close Alternative — 81.7% match based on chemical composition and mechanical property overlap.

BS 970 EN353 (BS 970:1955) and BS 970 EN363 (BS 970:1955) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN353 is typically used for heavily loaded gears, cams, camshafts, while BS 970 EN363 is commonly used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for tensile strength 65 tons/sq in min. supplied on tensile strength only or, by special arrangement, on analysis only.. BS 970 EN353 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN363 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN353 vs BS 970 EN363 is a 72.6% match. As per mechanical properties, the match is 100%. Combined, this makes them a close alternative overall at 81.7%.

Frequently Compared With BS 970 EN353:
UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A NF A35-565 100C6 GOST 4543 12HN3A IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 07Cr4Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
72.6%
MECHANICAL MATCH
100%
OVERALL
81.7%
Specifications
Property BS 970 EN353 BS 970 EN363
Standard BS 970:1955 BS 970:1955
Category Alloy Steel Alloy Steel
C (%) <=0.20 0.22-0.26
Si (%) <=0.35 <=0.35
Mn (%) 0.50-1.00 0.70-1.00
Ni (%) 1.00-1.50 0.40-0.70
Cr (%) 0.75-1.25 0.55-0.80
Mo (%) 0.08-0.15 0.08-0.15
S (%) <=0.050 <=0.050
P (%) <=0.050 <=0.050
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 EN353 BS 970 EN363
Tensile Strength ≥1004 MPa (65 tons/sq in, converted) ≥1004 MPa (65 tons/sq in, converted)
Elongation ≥12% Not specified
Condition core, min (lowest-strength condition of the standard) min (lowest-strength condition of the standard)
Typical Applications
BS 970 EN353
Heavily loaded gears, cams, camshafts
BS 970 EN363
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for tensile strength 65 tons/sq in min. Supplied on tensile strength only or, by special arrangement, on analysis only.
Can BS 970 EN353 Be Substituted With BS 970 EN363?
BS 970 EN353 and BS 970 EN363 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
BS 970 EN353
Round Bar → (3 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5200–6300 mm (204.72–248.03 in)
BS 970 EN363
No active listings currently.
On M-EX Right Now
BS 970 EN353
3 active listings and RFQs →
BS 970 EN363
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN353 and BS 970 EN363?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN353 be substituted with BS 970 EN363?
BS 970 EN353 and BS 970 EN363 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.