40crnimoa圓鋼
上架時間:
2017-06-29

40CrNiMoA圓鋼,40CrNiMoA合結鋼,40CrNiMoA鋼材,合金結構鋼簡稱合結鋼,40CrNiMoA是合結鋼的其中一種,也稱合金鋼,它是在優質碳素結構鋼的基礎上,適當wwwse94secomwwwse94secomwww94ssvvcom_avtt东京热手机_亚洲16P嫩地加入一種或數種合金元素(總含量不超過5%)而制成wwwse94secomwwwse94secomwww94ssvvcom_avtt东京热手机_亚洲16P嫩的鋼種。

化學成分

(2)

C 0.370.44

Si0.170.37 Mn0.503.82

S :允許殘余含量≤0.025

P :允許殘wwwse94secomwwwse94secomwww94ssvvcom_avtt东京热手机_亚洲16P嫩余含量≤0.025

Cr0.600.90

Ni1.258.98

Cu:允許殘余含量≤0.25

Mo0.152.75

力學性能

密度ρkg/m3):約7830

彈性wwwse94secomwwwse94secomwww94ssvvcom_avtt东京热手机_亚洲16P嫩模量(GPa):209

抗拉強度σb (MPa)≥980(100)

屈服強wwwse94secomwwwse94secomwww94ssvvcom_avtt东京热手机_亚洲16P嫩度σs (MPa)≥835(85)

伸長率δ5 (%)≥12

斷面收縮率ψ (%)58

(3)

沖擊功 Akv (J)≥78

沖擊wwwse94secomwwwse94secomwww94ssvvcom_avtt东京热手机_亚洲16P嫩韌性值αkv (J/cm²)≥67(37)

試樣尺寸:試樣毛坯wwwse94secomwwwse94secomwww94ssvvcom_avtt东京热手机_亚洲16P嫩尺寸為90mm

熱處理:(淬wwwse94secomwwwse94secomwww94ssvvcom_avtt东京热手机_亚洲16P嫩火850度;冷卻劑:油;回火溫度600度;冷卻劑:水、油);

鋼材退火或高溫回火wwwse94secomwwwse94secomwww94ssvvcom_avtt东京热手机_亚洲16P嫩供應狀態布氏硬度HBW≤269