Post Stock Login Register

BS 970 (Part 1) 708H20 vs EN ISO 683-17 20CrMo4

Strong Match — 90.8% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 708H20 (BS 970 (Part 1):1983) and EN ISO 683-17 20CrMo4 (EN ISO 683-17:2014) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 708H20 is typically used for case hardening steel supplied to specified hardenability limits (end quench test, table 10)., while EN ISO 683-17 20CrMo4 is commonly used for used in gears, shafts, axles, high-tensile bolts, and structural components.. BS 970 (Part 1) 708H20 is defined under British Standards (BS), originating from United Kingdom, while EN ISO 683-17 20CrMo4 is defined under European Standard (EN), originating from Europe.

As per chemical composition, BS 970 (Part 1) 708H20 vs EN ISO 683-17 20CrMo4 is a 90.8% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 90.8%.

Frequently Compared With BS 970 (Part 1) 708H20:
IS 11169 (Part 1) 12Cr4Mo2 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 7) 10Mo6H NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
90.8%
MECHANICAL MATCH
No shared data
OVERALL
90.8%
Specifications
Property BS 970 (Part 1) 708H20 EN ISO 683-17 20CrMo4
Standard BS 970 (Part 1):1983 EN ISO 683-17:2014
Category Alloy Steel Alloy Steel
C (%) 0.17-0.23 0.18-0.23
Mn (%) 0.60-0.90 0.60-0.90
Cr (%) 0.85-1.15 0.90-1.20
Mo (%) 0.15-0.25 0.15-0.25
P (%) <=0.035 <=0.035
S (%) <=0.040 <=0.035
Si (%) Not specified <=0.40
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 (Part 1) 708H20 EN ISO 683-17 20CrMo4
Tensile Strength Not specified 700-850 MPa
Yield Strength Not specified 500 MPa min
Elongation Not specified 14% min
Hardness Not specified 207-248 HB
Typical Applications
BS 970 (Part 1) 708H20
Case hardening steel supplied to specified hardenability limits (end quench test, Table 10).
EN ISO 683-17 20CrMo4
Used in gears, shafts, axles, high-tensile bolts, and structural components.
Key Differences
Can BS 970 (Part 1) 708H20 Be Substituted With EN ISO 683-17 20CrMo4?
BS 970 (Part 1) 708H20 and EN ISO 683-17 20CrMo4 overlap closely enough on chemistry and mechanical properties that EN ISO 683-17 20CrMo4 is often considered as a substitute for BS 970 (Part 1) 708H20 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
BS 970 (Part 1) 708H20
No active listings currently.
EN ISO 683-17 20CrMo4
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5200–6400 mm (204.72–251.97 in)
On M-EX Right Now
BS 970 (Part 1) 708H20
0 active listings and RFQs →
EN ISO 683-17 20CrMo4
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 1) 708H20 and EN ISO 683-17 20CrMo4?
EN ISO 683-17 20CrMo4 specifies Si which is not specified for BS 970 (Part 1) 708H20.
Can BS 970 (Part 1) 708H20 be substituted with EN ISO 683-17 20CrMo4?
BS 970 (Part 1) 708H20 and EN ISO 683-17 20CrMo4 overlap closely enough on chemistry and mechanical properties that EN ISO 683-17 20CrMo4 is often considered as a substitute for BS 970 (Part 1) 708H20 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.