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788gancon_sm949dC0mmOVieX25246html_肌肉女av地加入一種或數種合金元素(總含量不超過5%)而制成788gancon_sm949dC0mmOVieX25246html_肌肉女av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788gancon_sm949dC0mmOVieX25246html_肌肉女av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788gancon_sm949dC0mmOVieX25246html_肌肉女av模量(GPa):209

抗拉強度σb (MPa)≥980(100)

屈服強788gancon_sm949dC0mmOVieX25246html_肌肉女av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788gancon_sm949dC0mmOVieX25246html_肌肉女av韌性值αkv (J/cm²)≥67(37)

試樣尺寸:試樣毛坯788gancon_sm949dC0mmOVieX25246html_肌肉女av尺寸為90mm

熱處理:(淬788gancon_sm949dC0mmOVieX25246html_肌肉女av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788gancon_sm949dC0mmOVieX25246html_肌肉女av供應狀態布氏硬度HBW≤269