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EN 10087 11SMn30 vs EN 10087 9SMn28

Strong Match — 97.8% match based on chemical composition and mechanical property overlap.

EN 10087 11SMn30 (EN 10087:1998) and EN 10087 9SMn28 (EN 10087:1998) are both steel grades. Both fall under the Free Machining Steel category. EN 10087 11SMn30 is typically used for high volume screw machine parts, bolts, studs, while EN 10087 9SMn28 is commonly used for screw machine parts, general automatic turning. EN 10087 11SMn30 is defined under European Standard (EN), originating from Europe, while EN 10087 9SMn28 is defined under European Standard (EN), originating from Europe.

As per chemical composition, EN 10087 11SMn30 vs EN 10087 9SMn28 is a 96.7% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 97.8%.

Frequently Compared With EN 10087 11SMn30:
SAE J403 1141 IS 4432 10C8S10 SAE J403 1117 SAE J403 1117 IS 1570 (Part 3) 10C8S10 SAE J403 1117 SAE J403 1118 SAE J403 1118 SAE J403 1118 SAE J403 1126 SAE J403 1126 SAE J403 1126
Match Breakdown
CHEMISTRY MATCH
96.7%
MECHANICAL MATCH
100%
OVERALL
97.8%
Specifications
Property EN 10087 11SMn30 EN 10087 9SMn28
Standard EN 10087:1998 EN 10087:1998
Category Free Machining Steel Free Machining Steel
C (%) ≤0.14 ≤0.14
Si (%) ≤0.05 ≤0.05
Mn (%) 0.90–1.30 0.90–1.30
S (%) 0.27–0.33 0.24–0.32
P (%) ≤0.110 ≤0.110
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property EN 10087 11SMn30 EN 10087 9SMn28
Tensile Strength 380–570 MPa 380–570 MPa
Elongation ≥7% ≥7%
Hardness ≤180 HB Not specified
Typical Applications
EN 10087 11SMn30
High volume screw machine parts, bolts, studs
EN 10087 9SMn28
Screw machine parts, general automatic turning
Can EN 10087 11SMn30 Be Substituted With EN 10087 9SMn28?
EN 10087 11SMn30 and EN 10087 9SMn28 overlap closely enough on chemistry and mechanical properties that EN 10087 9SMn28 is often considered as a substitute for EN 10087 11SMn30 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
EN 10087 11SMn30
Hex Bar → (3 listings)
Across Flats: 25–25 mm (0.98–0.98 in)
Length: 2900–3600 mm (114.17–141.73 in)
EN 10087 9SMn28
Hex Bar → (2 listings)
Across Flats: 25–25 mm (0.98–0.98 in)
Length: 3500–5300 mm (137.8–208.66 in)
On M-EX Right Now
EN 10087 11SMn30
3 active listings and RFQs →
EN 10087 9SMn28
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10087 11SMn30 and EN 10087 9SMn28?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10087 11SMn30 be substituted with EN 10087 9SMn28?
EN 10087 11SMn30 and EN 10087 9SMn28 overlap closely enough on chemistry and mechanical properties that EN 10087 9SMn28 is often considered as a substitute for EN 10087 11SMn30 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.