5CrNiMo钢具有良好的韧性、强度和高耐磨性，属热作模具钢。它在室温和500～600℃时的力学性能几乎相同。在加热到500℃时，仍能保持住HB300左右的硬度。由于钢中含有钼，因而对回火脆性并不敏感。从600℃缓慢冷却下来以后，冲击韧性仅稍有降低。

化学成份

碳 C ：0.50～0.60

硅 Si：≤0.40

锰 Mn：0.50～0.80

硫 S ：≤0.030

磷 P ：≤0.030

铬 Cr：0.50～0.80

镍 Ni：1.40-1.80

铜 Cu：允许残余含量≤0.30

钼 Mo：0.15～0.30

硬度：退火,241～197HB,压痕直径3.9～4.3mm

技术参数

淬火后 ：58

淬火温度℃ ：830～860

交货状态 ：退火HB≤241

冷却剂 ：油Oil

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5CrNiMo steel has good toughness, strength and high wear resistance, and is a hot work die steel. It has almost the same mechanical properties at room temperature and 500 to 600 °C. When heated to 500 ° C, it can still maintain the hardness of HB300. Because steel contains molybdenum, it is not sensitive to temper brittleness. After slowly cooling from 600 ° C, the impact toughness was only slightly reduced.

chemical composition

Carbon C: 0.50~0.60

Silicon Si: ≤ 0.40

Mn: 0.50 to 0.80

Sulfur S :≤0.030

Phosphorus P :≤0.030

Chromium Cr: 0.50~0.80

Nickel Ni: 1.40-1.80

Copper Cu: Allowable residual content ≤ 0.30

Molybdenum Mo: 0.15~0.30

Hardness: Annealed, 241 ~ 197HB, indentation diameter 3.9 ~ 4.3mm

technical parameter

After quenching: 58

Quenching temperature °C: 830 ~ 860

Delivery status: Annealing HB≤241

Coolant : Oil Oil