Strong Match — 90.2% match
based on chemical composition and mechanical property overlap.
JIS G4804 SUM22 (JIS G 4804:2021) and EN 10087 9SMnPb28 (EN 10087:1998) are both steel grades.
Both fall under the Free Machining Steel category.
JIS G4804 SUM22 is typically used for screw machine parts, bolts, studs, pins, while EN 10087 9SMnPb28 is commonly used for complex precision turned parts.
JIS G4804 SUM22 is defined under Japanese Industrial Standards (JIS), originating from Japan, while EN 10087 9SMnPb28 is defined under European Standard (EN), originating from Europe.
As per chemical composition, JIS G4804 SUM22 vs EN 10087 9SMnPb28 is a 85.4% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 90.2%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
JIS G4804 SUM22
EN 10087 9SMnPb28
Tensile Strength
380–490 MPa
380–570 MPa
Hardness
≤149 HB
Not specified
Elongation
Not specified
≥5%
Typical Applications
JIS G4804 SUM22
Screw machine parts, bolts, studs, pins
EN 10087 9SMnPb28
Complex precision turned parts
Key Differences
JIS G4804 SUM22 specifies P which is not specified for EN 10087 9SMnPb28.
EN 10087 9SMnPb28 specifies Pb which is not specified for JIS G4804 SUM22.
Can JIS G4804 SUM22 Be Substituted With EN 10087 9SMnPb28?
JIS G4804 SUM22 and EN 10087 9SMnPb28 overlap closely enough on chemistry and mechanical properties that EN 10087 9SMnPb28 is often considered as a substitute for JIS G4804 SUM22 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 JIS G4804 SUM22 and EN 10087 9SMnPb28?
JIS G4804 SUM22 specifies P which is not specified for EN 10087 9SMnPb28. EN 10087 9SMnPb28 specifies Pb which is not specified for JIS G4804 SUM22.
Can JIS G4804 SUM22 be substituted with EN 10087 9SMnPb28?
JIS G4804 SUM22 and EN 10087 9SMnPb28 overlap closely enough on chemistry and mechanical properties that EN 10087 9SMnPb28 is often considered as a substitute for JIS G4804 SUM22 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.