ASTM8620 Round Steel Bar

Brand Huazhu
Product origin China
Delivery time 15-30days

AISI 8620 steel Manufacturer and Exporter,supplied with round,square,flat,block,and shaft etc.AISI 8620 is defined as low carbon alloy steel which has 0.5% Cr, 0.2% Mo and 0.5% Ni as strengthening alloy elements.It is generally supplied as annealed condition with hardness HB255max.AISI 8620 has good wear resistant with case hardness HRC 60-63 when carburized, hardened and tempered.Compared with grades 8615 and 8617, it shows good core strength and toughness properties with a typical tensile strength range of 700-1100 MPa,in small to medium sized sections.
AISI 8620 is suited for applications which require a combination of toughness and wear resistance. it is commonly used in the engineering and automitive industries for toolholders and other such components.
Typical application:Arbors, pinions, bushes, camshafts, kingpins,ratchets, gears, splined shafts etc.

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ASTM 8620 Round Steel Bar

ASTM 8620 round steel bar

1.Supply Form & Size & Tolerance

Supply Form	Size(mm)	Process	Tolerance
Round	Φ6-Φ100	Cold Drawn	Bright/Black	Best H11
	Φ16-Φ350	Hot Rolled	Black	-0/+1mm
	Φ16-Φ350	Hot Rolled	Peeled/ground	Best H11
	Φ90-Φ1000	Hot Forged	Black	-0/+5mm
	Φ90-Φ1000	Hot Forged	Rough Turned	-0/+3mm
Flat/Square/Block	Thickness :120-800	Hot Forged	Black	-0/+8mm
Flat/Square/Block	Width:120-1500	Hot Forged	Rough Machined	-0/+3mm

Remark:Tolerance can be customized as per requests

2.Chemical Composition

Standard	Grade	C	Si	Mn	P	S	Cr	Ni	Mo
ASTM A29	8620	0.18-0.23	0.15-0.35	0.7-0.9	≤ 0.035	≤ 0.04	0.4-0.6	0.4-0.7	0.15-0.25
EN 10084	1.6523	0.17-0.23	≤ 0.04	0.65-0.95	≤ 0.025	≤ 0.035	0.35-0.70	0.4-0.7	0.15-0.25
EN 10084	20NiCrMo2-2	0.17-0.23	≤ 0.04	0.65-0.95	≤ 0.025	≤ 0.035	0.35-0.70	0.4-0.7	0.15-0.25
JIS G4103	SNCM220	0.17-0.23	0.15-0.35	0.6-0.9	≤ 0.03	≤ 0.03	0.4-0.65	0.4-0.7	0.15-0.3
BS 970	805M20	0.17-0.23	0.1-0.4	0.6-0.95	≤ 0.04	≤ 0.05	0.35-0.65	0.35-0.75	0.15-0.25
GB 3077	20CrNiMoA	0.17-0.23	0.17-0.37	0.6-0.95	≤ 0.035	≤ 0.035	0.4-0.7	0.35-0.75	0.2-0.3

3.Physical Property

Density g/cm3	7.85
Melting point Deg F	2600
Poisson's ratio	0.27-0.30
Machinability (AISI 1212 as 100% machinability)	65%
Thermal expansion (20 ºC)(ºC ˉ ¹)	12.2*10^-6
Specific heat capacity J/(kg*K)	477
Thermal conductivity W/(m*K)	46.6
Electric resistivity Ohm*m	2.34*10^-7

4. Mechanical Property

Typical Mechanical Properties For Core – Carburised and Oil Quenched at 840 °C

Section Size	11mm	30mm	63mm
Tensile Strength Mpa	980-1270	780-1080	690-930
Yield Strength Mpa	≥785	≥590	≥490
Elongation %	≥9	≥10	≥11
Charpy Impact J	≥41	≥41	≥41
Hardness HB	290-375	235-320	205-275
Hardness HRC	31-41	23-35	16-29