C67S, 1.1231, XC68, AISI 1065 - Carbon low-alloy spring steel for oil hardening for lightweight springs according to EN 10132-4.
| sizes | Carbon steel spring cutted sheets, belts, and pieces - MORE DETAILS |
|---|---|
| Thicnkess: | 0,10 - 3,50mm |
| width: | standard 300mm (100 - 500mm) |
| lenght: | standard 1000mm (100 - 5000mm) |
| Tensile | usually annealed +LC |
| FULL DIMENSIONAL LIST - CLICK HERE | |
| Standards | Steel Grades | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chemical Composition % | |||||||||
| C: | Mn: | Si: | P: | S: | Cr: | Mo: | Ni: | Cu: | |
| EN / DIN | C67S - 1.1231 - Ck 67 - Ck67 | ||||||||
| 0.65 - 0.73 | 0.60 - 0.90 | 0.15 - 0.35 | <0.025 | <0.025 | <0.40 | <0.10 | <0.40 | - | |
| DIN | Ck68 - Ck 68 - C68E - 1.1234 - C 68 E WW | ||||||||
| 0.60 - 0.75 | <0.70 | 0.20 - 0.45 | <0.025 | <0.025 | - | - | - | - | |
| PN | grade 65 | ||||||||
| 0.62 - 0.70 | 0.50 - 0.80 | 0.10 - 0.40 | <0.04 | <0.040 | <0.30 | <0.10 | <0.30 | <0.30 | |
| ISO | CS65 - CS 65 | ||||||||
| 0.59 - 0.70 | 0.60 - 0.90 | 0.10 - 0.35 | <0.035 | <0.030 | - | - | - | - | |
| JIS | S65CM - S 65 CM | ||||||||
| 0.60 - 0.70 | 0.60 - 0.90 | 0.15 - 0.35 | <0.030 | <0.035 | <0.20 | - | <0.20 | <0.30 | |
| AFNOR | XC68 - XC 68 | ||||||||
| 0.65 - 0.73 | 0.40 - 0.70 | 0.15 - 0.35 | <0.035 | <0.025 | - | - | - | - | |
| DIN | C 67 - C67 - 1.0603 | ||||||||
| 0.65 - 0.72 | 0.60 - 0.90 | 0.15 - 0.35 | <0.045 | <0.045 | - | - | - | - | |
| GOST | 65 | ||||||||
| 0.62 - 0.70 | 0.30 - 0.70 | 0.17 - 0.37 | <0.035 | <0.035 | <0.15 | - | <0.15 | <0.20 | |
| EN | 2CS67 - 2 CS 67 - 1.1231 | ||||||||
| 0.65 - 0.72 | 0.60 - 0.90 | 0.15 - 0.40 | <0.035 | <0.035 | - | - | - | - | |
| DIN | 70Cr2 - 70 Cr 2 - 1.2007 - 2007 | ||||||||
| 0.65 - 0.70 | 0.75 - 0.90 | 0.20 - 0.30 | <0.030 | <0.030 | 0.55 - 0.70 | - | - | - | |
| EN | 1CS67 - 1 CS 67 - 1.0603 | ||||||||
| 0.52 - 0.72 | 0.60 - 0.90 | 0.15 - 0.40 | <0.045 | <0.045 | - | - | - | - | |
| SAE | AISI 1065 - J403 | ||||||||
| 0.60 - 070 | 0.60 - 0.90 | - | <0.030 | <0.050 | <0.30 | <0.12 | <0.40 | <0.40 | |
| ČSN / STN | ČSN 12 061 - 12061 | ||||||||
| 0.57 - 0.65 | 0.50 - 0.80 | 0.15 - 0.40 | <0.04 | <0.04 | <0.25 | - | <0.30 | <0.30 | |
C67S, 1.1231 - specification and application
Structural steel with low hardening capacity designed for less loaded springs, periodically working for oil hardening and surface hardening with dimensions up to 10mm.
Used as steel for valve springs, coupling springs, shock absorbers, tool steel for i.e. hammers, punches, rakes, chisels, flat springs, adjustable steel washers, and other spring elements.
C67S steel is non-weldable, prone to decarburization and oxidation during heat treatment, and is not resistant to atmospheric corrosion.
Mechanical and physical properties of C67S according to PN-EN 10132-4
| Mechanical and physical properties | ||||
|---|---|---|---|---|
| Heat-treated state C67S +QT | ||||
| Tensile strength | Rm | 1200 - 1900 MPa | ||
| Hardness | HV | HRC | 370 - 580 HV | 38.5 - 54.0 HRC |
| Cold-rolled state C67S +CR | ||||
| Tensile strength | Rm | < 1140 MPa | ||
| Hardness | HV | < 315 HV | ||
| Soft state after smoothing rolling C67S +A+LC | ||||
| Tensile strength | Rm | < 510 MPa | ||
| Yield point | Re | < 640 MPa | ||
| Elongation | A | > 16% | ||
| Hardness | HV | HRB | < 200 HV | < 92 HRB |
| Density | ρ | 7,82 kg/dm³ | ||
Heat treatment - 65 / C67S steel grades
| Heat treatment of C67S grade | ||
|---|---|---|
| Process | Cooling | temperatures |
| Normalizing annealing | in air | 800 - 830℃ |
| Softening annealing | 660 - 700℃ | |
| Hardening | in oil | 830 - 850℃ |
| Tempering | in air | 460 - 500℃ |
In the C67S and 65 grades the company provides:
- Cold-rolled spring tapes C67S
- Cutted sheets and bars C67S
- Spring wires of Ck67 grade
- Cold-rolled sheets of 65 grade
List of equivalents and other determinations of C67S steel:
C67S, 1.1231, Ck 67, Ck67, Ck68, Ck 68, C68E, 1.1234, C 68 E WW, gat. 65, CS65, CS 65, S65CM, S 65 CM, XC68, XC 68, C 67, C67, 1.0603, 65, 2CS67, 2 CS 67, 1.1231, 1CS67, 1 CS 67, SAE 1065, J403, ČSN 12 061, ČSN 12061, 70Cr2, 70 Cr 2, 1.2007, 2007