SCH24X Mould Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Mould Steel | SCH24X | |||
| SCH18 | 
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| SCH19 | 
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| SCH20 | 
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| SCH20X | 
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| SCH20XNb | 
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| SCH21 | 
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| SCH22 | 
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| SCH22X | 
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| SCH23 | 
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| SCH24 | 
                                
| 
				C ≤  | 
			
				Si ≤  | 
			
				Mn ≤  | 
			
				P ≤  | 
			
				S ≤  | 
			Cr | Ni | 
|---|---|---|---|---|---|---|
| 0.3-0.5 | 1.0-2.5 | 2.0 | 0.04 | 0.03 | 24-27 | 33-36 | 
| Mo | Al | Cu | Nb | Ti | V | Ce | 
| ≤0.5 | ||||||
| N | Co | Pb | B | Other | ||
| 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) | 
|---|---|---|---|---|---|---|
| 682 (≥) | 125 (≥) | 11 | 32 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 241 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 34 | - | - | 0.14 | - | |||
| 776 | 285 | - | 32.3 | 411 | - | ||
| 492 | - | 33 | 44.2 | 224 | 223 | 
Heat treated : 1686°C - 1432°C
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