Alloy structural steel forging materials,the component part of shaft and kolbenteil and auto,plane

Grade:18Cr2Ni4WA shaft forging blanks

Standard:GB/T3077-1999

:CHENMICAL COMPOSITION

substance	C	SI	MN	S	P	CR	NI	CU	W
	0.13~0.19	0.17~0.37	0.30~0.60	≤0.025	≤0.025	1.35~1.65	4.00~4.50	≤0.025	0.80~1.20

 MECHANICAL PROPERTIESTENSIBLE STRENGTH σb (MPa)≥1175(120) YIELD STRENGTHσs (MPa)≥835(85)ELONGATION δ5 (%)≥10 REDUCTION OF CROSS SECTIONAL AREA ψ (%)≥45POWER RUSH Akv (J)≥78IMPACT FLEXIBILITY αkv (J/cm2)≥98(10)HARDNESS ≤269HBMODEL MEASUREMENTTESTING SAMPLE BLANK DIMENSIONS15mm

HEAT TREATMENT AND METALLURGICAL STRUCTUREHEAT TREATMENT  

QUENCHING 950°C AT FIRST,THEN 850°C AIR COOLING,tempering200°C water and air cooling.

DELIVERY

HEAT TREATMENT SUCH AS NORMALIZING,annealing,tempering at hight temperature or not.The delivery condition should be made out in the contract.

APPLICATION

  

 Alloy structural steel,Good processing performance,small distortion,fatigue-resistance which is Used as the component part of shaft and kolbenteil and auto,plane

18Cr2NI4WA shaft forging blank