Related Material — 68.6% match
based on chemical composition and mechanical property overlap.
EN 10083-3 30CrNiMo8 (EN 10083-3:2006) and BS 970 (Part 3) 826M31 (BS 970 (Part 3):1991) are both steel grades.
Both fall under the Alloy Steel category.
EN 10083-3 30CrNiMo8 is typically used for heavy duty forgings, turbine rotors, pressure vessels, while BS 970 (Part 3) 826M31 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (table 16).
EN 10083-3 30CrNiMo8 is defined under European Standard (EN), originating from Europe, while BS 970 (Part 3) 826M31 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, EN 10083-3 30CrNiMo8 vs BS 970 (Part 3) 826M31 is a 68.6% 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 68.6%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10083-3 30CrNiMo8
BS 970 (Part 3) 826M31
Condition
Quenched and tempered (+QT), ruling section d <= 16 mm
Not specified
Elongation
9% min
Not specified
Hardness
Soft annealed (+A): 248 HBW max
Not specified
Tensile Strength
1250 to 1450 MPa
Not specified
Yield Strength
1050 MPa min
Not specified
Typical Applications
EN 10083-3 30CrNiMo8
Heavy duty forgings, turbine rotors, pressure vessels
BS 970 (Part 3) 826M31
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (Table 16)
Can EN 10083-3 30CrNiMo8 Be Substituted With BS 970 (Part 3) 826M31?
EN 10083-3 30CrNiMo8 and BS 970 (Part 3) 826M31 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.
What is the difference between EN 10083-3 30CrNiMo8 and BS 970 (Part 3) 826M31?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10083-3 30CrNiMo8 be substituted with BS 970 (Part 3) 826M31?
EN 10083-3 30CrNiMo8 and BS 970 (Part 3) 826M31 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.