Hot rolled steel round bar SAE8620 Quality: AISI8620 Standard Performed: ASTM A29/A29M-04 Grade:SAE8620 50CrMo4

Hot  rolled steel round bar  SAE8620

Quality: AISI8620   Standard Performed: ASTM A29/A29M-04

1.Grade:SAE8620  50CrMo4  SNCM220  805M20 4150 4140 EN24 4340 

Size: 12mm-300mm

2.Chemical composition:

Grade	C	Si	Mn	P	S	Cr	Ni	Mo
8620	0.18-0.23	0.15-0.35	0.70-0.90	Max 0.035	Max 0.035	0.40-0.60	0.40-0.70	0.15-0.25

3.Mechanical Property:

Grade:ASTM A29  SAE 8620  SNCM220   

Hardness:197HB  

Tensile  strength:980(100)MPA  

Yield  strength: 785(180)MPA 

elogation:9%  Reduction  of  area:40%   AKV(impact  value):47J

4. Size Tolerance:

Length tolerance: +100mm/-0mm

Side length tolerance: +/-2mm

Straightness:Max 6mm/m

5. Quality Contation

Both end of each bar must be cut.

Ladle furnanced and vacuum de-gassed

Show heat No. on each bar

Surface condition the surface of the hot rolled square bar shall befree cracks, scar and wrinkles that affect the use of the billets. In case there is the above-mentioned defect, it shall be remove.

The mill test certificate shall show the chemical composition, and it is guaranteed that the chemical composition shall be within the limit stipulated in the contract.

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