C60
1.0601High-carbon unalloyed quenching and tempering steel. High hardness and strength after heat treatment but difficult to weld. Used for springs, hand tools (screwdrivers, pliers), agricultural blades, wear parts, and railway components.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 1060 | G10600 | REF |
| 🇪🇺 | EN | Europe | C60 | 1.0601 | 100% |
| 🇨🇳 | GB | China | 60 | — | 95% |
| 🇯🇵 | JIS | Japan | S58C | — | 93% |
| 🇬🇧 | BS | United Kingdom | 060A62 | — | 93% |
Sources: ASTM A29, EN 10083-2:2006, GB/T 699, JIS G4051, BS 970
Chemical composition comparison (wt%)
Side-by-side: C60 (EN) (EN 10083-2:2006) vs AISI 1060 (AISI) (ASTM A29)
| Element | C60 (EN) | AISI 1060 (AISI) | Overlap |
|---|---|---|---|
| C | 0.57–0.65% | 0.55–0.65% | OK |
| Si | 0–0.4% | — | — |
| Mn | 0.6–0.9% | 0.6–0.9% | OK |
| P | 0–0.045% | 0–0.04% | OK |
| S | 0–0.045% | 0–0.05% | OK |
| Cr | 0–0.4% | — | — |
| Mo | 0–0.1% | — | — |
| Ni | 0–0.4% | — | — |
Mechanical properties
QT
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 800–950 | MPa |
| Yield Strength | ≥ 480 | MPa |
| Elongation | ≥ 13 | % |
| Hardness HB | 230–285 | HB |
| Elastic Modulus | ≥ 210 | GPa |
| Density | ≥ 7.85 | g/cm3 |
Normalized
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 660–780 | MPa |
| Yield Strength | ≥ 350 | MPa |
| Elongation | ≥ 11 | % |
Heat treatment
| Process | Temperature | Medium | Holding Time | Notes |
|---|---|---|---|---|
| normalizing | 820–860 °C | air | min 2 min per mm | — |
| quenching | 800–840 °C | water | min 30 min | Oil quenching for larger sections to reduce cracking risk |
| tempering | 550–660 °C | air | min 60 min | — |
| annealing | 680–710 °C | furnace | Several hours | Soft annealing, max 241 HB |
Compatibility verdict
C60 and AISI 1060: 97% composition match
Close equivalents but NOT identical. Critical differences: C range (0.57–0.65 vs 0.55–0.65), P range (0–0.045 vs 0–0.04), S range (0–0.045 vs 0–0.05).
For dual certification, melt must hit: C 0.57–0.65, P 0–0.04, S 0–0.045
Related materials
S355JR
1.0045High-strength low-alloy structural steel with minimum yield strength of 355 MPa. Standard grade for bridges, buildings, cranes, and general structural applications. Impact tested at +20°C (JR).
S690QL
1.8928High-strength quenched and tempered fine-grain structural steel with minimum yield strength of 690 MPa. Used for heavily loaded structures like mobile cranes, mining equipment, bridges, and pressure vessels.
S275JR
1.0044Medium-strength structural steel with minimum yield strength of 275 MPa. Bridges the gap between S235JR and S355JR. Used for general structural applications, lattice towers, masts, and light crane components. Impact tested at +20°C (JR).
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