C85S, 1.1269, XC85, AISI 1086 - Low-alloy spring steel for oil hardening for lightweight springs according to EN 10132-4.
| Standards | Steel Grades | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chemical Composition % | |||||||||
| C: | Mn: | Si: | P: | S: | Cr: | Mo: | Ni: | Cu: | |
| EN | C85S - 1.1269 - C 85 S - Ck85 | ||||||||
| 0.80 - 0.90 | 0.40 - 0.70 | 0.15 - 0.35 | <0.025 | <0.025 | <0.40 | <0.10 | <0.40 | - | |
| EN | 2CS85 | ||||||||
| 0.80 - 0.90 | 0.45 - 0.65 | 0.15 - 0.40 | <0.035 | <0.035 | - | - | - | - | |
| AFNOR | XC85 - XC 85 | ||||||||
| 0.80 - 0.98 | 0.40 - 0.70 | 0.20 - 0.40 | <0.04 | <0.04 | - | - | - | - | |
| ISO | CS85 - CS 85 | ||||||||
| 0.80 - 0.94 | 0.70 - 1.00 | 0.10 - 0.35 | <0.035 | <0.03 | - | - | - | - | |
| BS | CS80 - CS 80 | ||||||||
| 0.75 - 0.85 | 0.50 - 0.90 | 0.05 - 0.35 | <0.045 | <0.045 | - | - | - | - | |
| DIN | CK 85 - Ck85 | ||||||||
| 0.80 - 0.90 | 0.45 - 0.65 | 0.15 - 0.35 | <0.035 | <0.035 | - | - | - | - | |
| DIN | 85Cr1 - 85 Cr 1 - 1.2004 - 2004 | ||||||||
| 0.80 - 0.90 | 0.50 - 0.70 | 0.30 - 0.50 | <0.035 | <0.035 | 0.30 - 0.45 | - | - | - | |
| PN | gat. 85 | ||||||||
| 0.82 - 0.90 | 0.50 - 0.80 | 0.17 - 0.37 | <0.040 | <0.040 | <0.30 | - | <0.30 | <0.25 | |
| DIN | C85E - C 85 E | ||||||||
| 0.80 - 0.90 | 0.40 - 0.70 | 0.15 - 0.35 | <0.025 | <0.025 | <0.40 | <0.10 | <0.40 | - | |
| GOST | 85 | ||||||||
| 0.82 - 0.90 | 0.30 - 0.70 | 0.17 - 0.37 | <0.035 | <0.035 | <0.15 | - | <0.15 | <0.20 | |
| ČSN STN | ČSN 12 090 - 12090 | ||||||||
| 0.80 - 0.90 | 0.20 - 0.60 | <0.35 | <0.030 | <0.035 | - | - | - | - | |
| AISI | AISI 1086 | ||||||||
| 0.80 - 0.93 | 0.30 - 0.50 | - | <0.04 | <0.05 | - | - | - | - | |
C85S, 1.1269, AISI 1086 - specification and application
Non-alloyed carbon structural steel with low hardening capacity for oil hardening for low-duty, periodically operating springs, springs and spring elements, immune to the temper brittleness. It is characterized by its high hardness and abrasion resistance, while maintaining high strength. It is used for flat and spiral springs, machine parts or saws of all kinds for cutting.
Grade 85 and C85S steel are mainly used as steel for ball mills, press plates, stone saws, wire for steel ropes, briquetting press parts. C85S and 85 steels are non-weldable and resistant to corrosive environments due to their high carbon content and low levels of alloying additives. During heat treatment steel is vulnerable to decarburization and oxidation.
Mechanical properties of steel
| Mechanical and physical properties | ||||
|---|---|---|---|---|
| Heat-treated state C85S +QT | ||||
| Tensile Strenght | Rm | 1200 - 2000 MPa | ||
| Hardness | HRC | HV | 38.5 - 55.0 HRC | 370 - 600 HV |
| Soft state after smoothing rolling C85S +A+LC | ||||
| Tensile strenght | Rm | < 670 MPa | ||
| Yield point | Re | < 535 MPa | ||
| Elongation | A | > 15% | ||
| Hardness | HRB | HV | < 94 HRB | < 210 HV |
| Cold-rolled state C85S +CR | ||||
| Tensile Strenght | Rm | < 1190 MPa | ||
| Hardness | HV | < 325 HV | ||
Heat treatment process
| Heat treatment | ||
|---|---|---|
| Process | cooling | Temperatures |
| Normalizing annealing | w powietrzu | 780 - 810℃ |
| Softening annealing | 660 - 700℃ | |
| Hardening | in oil | 810 - 830℃ |
| Tempering | in air | 460 - 500℃ |
In the C85S, 1.1269 grades the company provides:
- Cold-rolled strips C85S, 1.1269, XC85, CK85
- Cutted sheets and flat bars C85S, 1.1269, XC85
- Sheets and plates
- Spring wires Ck85
List of equivalents and other determinations of C85S steel:
C85S, 1.1269, C 85 S, Ck85, 2CS85, XC85, XC 85, CS85, CS 85, CS80, CS 80, CK 85, Ck85, gat. 85, C85E, C 85 E, 85, ČSN 12 090, ČSN 12090, AISI 1086, 85Cr1, 85 Cr 1, 1.2004, 2004