Strong Match — 91% match
based on chemical composition and mechanical property overlap.
JIS G3506 SWRH77B (JIS G3506:2004) and DIN 17222 C75 (DIN 17222:1979-08) are both steel grades.
Both fall under the Carbon Steel category.
JIS G3506 SWRH77B is typically 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, while DIN 17222 C75 is commonly used for springs, chisels, punches, cutting tools, hand tools.
JIS G3506 SWRH77B is defined under Japanese Industrial Standards (JIS), originating from Japan, while DIN 17222 C75 is defined under Deutsches Institut fur Normung (DIN), originating from Germany.
As per chemical composition, JIS G3506 SWRH77B vs DIN 17222 C75 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
JIS G3506 SWRH77B
DIN 17222 C75
Tensile Strength
Not specified
850–1000 MPa (annealed)
Hardness HRC
Not specified
58–63 (hardened)
Hardness HB
Not specified
229–285 (annealed)
Typical Applications
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
DIN 17222 C75
Springs, chisels, punches, cutting tools, hand tools
Can JIS G3506 SWRH77B Be Substituted With DIN 17222 C75?
JIS G3506 SWRH77B and DIN 17222 C75 overlap closely enough on chemistry and mechanical properties that DIN 17222 C75 is often considered as a substitute for JIS G3506 SWRH77B 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 G3506 SWRH77B and DIN 17222 C75?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G3506 SWRH77B be substituted with DIN 17222 C75?
JIS G3506 SWRH77B and DIN 17222 C75 overlap closely enough on chemistry and mechanical properties that DIN 17222 C75 is often considered as a substitute for JIS G3506 SWRH77B in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.