Alloy Steel Bar SAE8620 4140 4145h Forged/Hot Rolled Steel

Model NO.
alloy steel bar
Composition
Ferrous Steel Scrap
Technique
Hot Rolled or Forged Steel Bar
Shape
Bar
Surface Treatment
Black or Rough Machining
Special Use
Cold Heading Steel, Mold Steel
Application
Structural Steel Bar
Supply Condition
Hot Rolled or Forged Steel Bar
Grade
Alloy Steel Bar
Surface
Bright or Black Steel Bar
Main Grade
SAE8620 4140 4150 4340
4140 Steel Bar
1000ton Stock
Transport Package
Seaworthy Packaging
Specification
diameter: 16-800mm
Trademark
dajin
Origin
China
Production Capacity
2000
Reference Price
$ 540.00 - 810.00
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Product Description

SAE8620 Alloy steel round bars
alloy steel bar SAE8620 4140 4340 Forged & hot rolled steel 

GENERAL CHARACTERISTICS OF ALLOY STEEL 8620
Alloy steel 8620 is a case-hardening steel containing nickel, chromium and molybdenum as alloying elements. The alloy shows good strength and toughness properties, and has a higher core strength than grades 8615 and 8617.
8620 alloy steel bar 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

8620 alloy steel bar 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

8620 alloy steel bar  applications
This alloy may be used in the production of medium-strength parts such as forged camshafts, fasteners and gears.
8620 Alloy steel bar HEAT TREATMENT
Annealing :For optimum machinabilty, an as-forged structure is normally sufficient for this grade of alloy steel. If this proves not to be the case then an iso-anneal from around 1650ºF (900ºC) to 1225ºF (660ºC) will improve machinability.
Normalizing :1675ºF (910ºC) and air cool. This is another method of improving machinability in this grade; normalizing might also be used prior to case hardening.
Hardening :The alloy will be austenitized at around 1525ºF (830ºC) and oil or water quenched depending upon section size and intricacy.
Tempering :to desired hardness, using temperatures based on past experience, following water or oil quench.
Machinability :This grade of alloy is readily machined following suitable cooling from forging or subsequent heat treatment.
Alloy Steel Bar SAE8620 4140 4145h Forged/Hot Rolled Steel
Alloy Steel Bar SAE8620 4140 4145h Forged/Hot Rolled Steel
Alloy Steel Bar SAE8620 4140 4145h Forged/Hot Rolled Steel
Alloy Steel Bar SAE8620 4140 4145h Forged/Hot Rolled Steel


Other grade of alloy steel bar we can supply
  Steel grades C Si Mn Cr Mo Ni P S
Carbon Structure Steel Q235(B)/SS400/S235JR/A36 ≤  0.20 ≤ 0.35 ≤1.4 0.3-0.4   ≤ 0.30 ≤  0.045 ≤ 0.045
20#/CK22, CK20/1020/050A20/S20C 0.17-0.23 0.17-0.37 0.35-0.65 0.3-0.4   ≤ 0.30 ≤  0.035 ≤ 0.035
45#/CK45, C45/1045/080M46/S45C 0.42-0.5 0.17-0..37 0.5-0.8 0.3-0.4   ≤ 0.30 ≤  0.035 ≤ 0.035
Alloy Structure Steel 20Cr/20Cr4/5120/527A19/SCr420H 0.18-0.24 0.17-0.37 0.50-0.80 0.70-1.00 ≤ 0.15 ≤ 0.30 ≤  0.035 ≤ 0.035
40Cr/41Cr4/5140/520M40/SCr440 0.37-0.44 0.17-0.37 0.5-0.8 0.8-1.1 ≤ 0.15 ≤ 0.30 ≤  0.035 ≤ 0.035
30CrMo/4130/1717COS110/SCM420 0.26-0.34 0.17-0.37 0.4-0.7 0.8-1.1 0.15-0.25 ≤ 0.30 ≤  0.035 ≤ 0.035
35CrMo/34CrMo4/4135/708A37 0.32-0.40 0.17-0.37 0.4-0.7 0.8-1.1 0.15-0.25 ≤ 0.30 ≤  0.035 ≤ 0.035
42CrMo/42CrMo4/4140/708A42/708M40 0.38-0.45 0.17-0.37 0.5-0.8 0.90-1.2    0.15-0.25 ≤ 0.30 ≤  0.035 ≤ 0.035
8620H 0.17-0.23 0.15-0.35 0.65-0.95 0.35-0.65 0.15-0.25 0.35-0.75 ≤0.025 ≤ 0.035
40CrNiMoA/40CrNiMo22/4340/871M40/SNCM439 0.37-0.44 0.17-0.37 0.50-0.80 0.60-0.90 0.15-0.25 1.25-1.65 ≤  0.025 ≤ 0.025
Spring Steel 55Si2Mn/55Si7/9255/250A53/SUP6 0.52-0.60 1.50-2.00 0.60-0.90 ≤ 0.35   ≤ 0.35 ≤  0.035 ≤ 0.035
60Si2MnA/65Si7/9260/250A61/SUP7 0.56-0.64 1.60-2.00 0.70-1.00 0.3-0.4   ≤0.35 ≤  0.025 ≤ 0.025
50CrVA/50CrVA/6150/735A50/SUP10 0.47-0.54 0.17-0.37 0.50-0.80 0.80-1.10 ≤0.15 ≤0.30 ≤  0.025 ≤ 0.025
GCr15/100Cr6/E52100/534A99/SUJ2 0.95-1.05 0.15-0.35 0.25-0.45 1.40-1.65 ≤ 0.10 ≤0.30 ≤  0.025 ≤ 0.025
Bearing  Steel 52100 0.93-1.05 0.15-0.35 0.25-0.45 1.35-1.60 ≤ 0.10 ≤0.25 ≤  0.025 ≤ 0.015

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Alloy Steel Bar SAE8620 4140 4145h Forged/Hot Rolled Steel
Alloy Steel Bar SAE8620 4140 4145h Forged/Hot Rolled Steel
Alloy Steel Bar SAE8620 4140 4145h Forged/Hot Rolled Steel
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Alloy Steel Bar SAE8620 4140 4145h Forged/Hot Rolled Steel
Alloy Steel Bar SAE8620 4140 4145h Forged/Hot Rolled Steel

 

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