Lloyds LR Type 690
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LR Type 690 grade, What's the Chemical Composition of Lloyds LR Type 690? Chemical Composition of LR Type 690 Steel, LR Type 690 steel properties, LR Type 690 carbon Steel, Lloyds LR Type 690 steel plate Supplier in Japan, Lloyds LR Type 690 steel sheet Exporter, Lloyds LR Type 690 steel Price, Lloyds LR Type 690 Equivalent steel, Lloyds LR Type 690 steel supplier in China, Lloyds LR Type 690 steel Chinese equivalent grade, Lloyds LR Type 690 steel Specifications
Application: Alloy steel forgings.
Heat treated: 1794°C - 1431°C.
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Lloyds LR Type 690 Chemical element
What is the chemical composition of Lloyds LR Type 690? For Lloyds LR Type 690 element content, please contact us.
| Element | Min | Max | Similar |
|---|---|---|---|
| Ni | 0.4000 | - | - |
| Mo | 0.1500 | - | - |
| Cr | 0.4000 | - | - |
| Cu | - | 0.3000 | - |
| P | - | 0.0350 | - |
| S | - | 0.0350 | - |
| Mn | 0.3000 | - | - |
| Si | - | 0.4500 | - |
| C | - | 0.4500 | - |
| Ni | 0.4000 | - | - |
| Mo | 0.1500 | - | - |
| Cr | 0.4000 | - | - |
| Cu | - | 0.3000 | - |
| P | - | 0.0350 | - |
| S | - | 0.0350 | - |
| Mn | 0.3000 | - | - |
| Si | - | 0.4500 | - |
| C | - | 0.4500 | - |
| Si | - | 0.4500 | - |
| S | - | 0.0350 | - |
| P | - | 0.0350 | - |
| Ni | 0.4000 | - | - |
| Mo | 0.1500 | - | - |
| Mn | 0.3000 | - | - |
| Cu | - | 0.3000 | - |
| Cr+Ni+Cu | - | 0.8500 | - |
| Cr | 0.4000 | - | - |
| C | - | 0.4500 | - |
Lloyds LR Type 690 Mechanical properties
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 338 (≥) | 768 (≥) | 33 | 13 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 114 |
Lloyds LR Type 690 Physical properties
The Lloyds LR Type 690 material physical properties shall comply with the values given in the following table.
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson's coefficient, ν |
|---|---|---|---|---|---|---|---|
| 32 | - | - | 0.12 | - | |||
| 418 | 423 | - | 23.3 | 344 | - | ||
| 644 | - | 23 | 44.2 | 132 | 222 |
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