40cr seamless tibiam ferro

Description:

Productio specificatio:

Diameter exterior fistulae ferreae 20-426

Ferrum tibia muri crassitudine 20-426

Fistula ferro vexillum;

Secundum vexillum GB/T 3077-2008: compositio chemica (fractionis massae, %) C 0.37~0.44, Si 0.17~0.37, Mn 0.50~0.80, Cr0.80~1.10, Ni≤0.30.Mechanica proprietatibus

Sample blank size (mm) : 25

Calor treatment:

Primo exstingui caloris caliditatem (℃): 850;Coolant: oleum

Secunda exstingui caloris caliditas (℃) : -

Temperatio calefaciendi temperamentum (℃): 520;Coolant: aqua, oleum

Robur distrahens (σb/MPa) : 980

Cedant punctum (σs/MPa) : 785

Prolongatio post fractionem (55/%) : ≧9

Reductio rate of sectione transversali (ψ/%) : ≧45

Impact effusio operis (Aku2/J) : 47

Brinell duritia (HBS100/3000) (substantiae vel summus temperaturae condicionis temperaturae) : ≦207


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