Strong Match — 91% match
based on chemical composition and mechanical property overlap.
DIN 17222 C75 (DIN 17222:1979-08) and JIS G3506 SWRH77B (JIS G3506:2004) are both steel grades.
Both fall under the Carbon Steel category.
DIN 17222 C75 is typically used for springs, chisels, punches, cutting tools, hand tools, while JIS G3506 SWRH77B is commonly used for high-carbon hard-drawn steel wire rod (sw-c class, 0.80% c); used for hard-drawn steel wire, oil-tempered wire, prestressed concrete (pc) wire/strand, galvanized wire strands, wire rope, springs, tire bead wire.
DIN 17222 C75 is defined under Deutsches Institut fur Normung (DIN), originating from Germany, while JIS G3506 SWRH77B is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, DIN 17222 C75 vs JIS G3506 SWRH77B is a 91% 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 91%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
DIN 17222 C75
JIS G3506 SWRH77B
Tensile Strength
850–1000 MPa (annealed)
Not specified
Hardness HRC
58–63 (hardened)
Not specified
Hardness HB
229–285 (annealed)
Not specified
Typical Applications
DIN 17222 C75
Springs, chisels, punches, cutting tools, hand tools
JIS G3506 SWRH77B
High-carbon hard-drawn steel wire rod (SW-C class, 0.80% C); used for hard-drawn steel wire, oil-tempered wire, prestressed concrete (PC) wire/strand, galvanized wire strands, wire rope, springs, tire bead wire
Can DIN 17222 C75 Be Substituted With JIS G3506 SWRH77B?
DIN 17222 C75 and JIS G3506 SWRH77B overlap closely enough on chemistry and mechanical properties that JIS G3506 SWRH77B is often considered as a substitute for DIN 17222 C75 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 DIN 17222 C75 and JIS G3506 SWRH77B?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can DIN 17222 C75 be substituted with JIS G3506 SWRH77B?
DIN 17222 C75 and JIS G3506 SWRH77B overlap closely enough on chemistry and mechanical properties that JIS G3506 SWRH77B is often considered as a substitute for DIN 17222 C75 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.