Strong Match — 88.4% match
based on chemical composition and mechanical property overlap.
EN 10088-3 X12Cr13 (EN 10088-3:2014) and BS 970 (Part 3) 420S29 (BS 970 (Part 3):1991) are both steel grades.
Both fall under the Stainless Steel category.
EN 10088-3 X12Cr13 is typically used for general purposes, semi-finished products, bars, rods, wire, sections and bright products, while BS 970 (Part 3) 420S29 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; martensitic stainless steel (table 17).
EN 10088-3 X12Cr13 is defined under European Standard (EN), originating from Europe, while BS 970 (Part 3) 420S29 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, EN 10088-3 X12Cr13 vs BS 970 (Part 3) 420S29 is a 88.4% 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 88.4%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10088-3 X12Cr13
BS 970 (Part 3) 420S29
Tensile Strength
<=730 MPa
Not specified
Hardness
<=220 HB
Not specified
Condition
Annealed (+A), conditions 1C, 1E, 1D, 1X, 1G and 2D, size range not stated; hardness for guidance only
Not specified
Typical Applications
EN 10088-3 X12Cr13
General purposes, semi-finished products, bars, rods, wire, sections and bright products
BS 970 (Part 3) 420S29
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; martensitic stainless steel (Table 17)
Can EN 10088-3 X12Cr13 Be Substituted With BS 970 (Part 3) 420S29?
EN 10088-3 X12Cr13 and BS 970 (Part 3) 420S29 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 420S29 is often considered as a substitute for EN 10088-3 X12Cr13 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between EN 10088-3 X12Cr13 and BS 970 (Part 3) 420S29?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10088-3 X12Cr13 be substituted with BS 970 (Part 3) 420S29?
EN 10088-3 X12Cr13 and BS 970 (Part 3) 420S29 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 420S29 is often considered as a substitute for EN 10088-3 X12Cr13 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.