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Alloy steel round bar
Alloy steel round bar

4140 alloy steel round bar Diameter:20mm-300mm Quality:ELF+VD Delivery condition:hot rolled+black surface

Hot  rolled steel round bar  4140 42CrMo4 

Large  diameter,good  quality,

competitive price,shipping  quickly,

Delivery  condition:hot  rolled+black  surface

1. Quality: AISI4140

   Dia:12mm-300mm

2. Standard Performed: ASTM A29/A29M-04

  Equal Standard:

America Standard: AISI4140

International Standard: 42CrMo4

Japan Standard: SCM440

Germany Standard: 42CrMo4

3. Chemical composition:

Grade

C

Si

Mn

P

S

Ni

Cr

 Mo

 Cu

 Al

AISI4140

0.38

0.41

0.15

0.35

0.85

1.00

 Max

0.015

 Max

0.040

 Max

0.25

0.80

1.10

0.15

0.25

 Max

0.35

 0.012

 0.030

4.Grade:ASTM A29  4140  42CrMo  SCM440 

Hardness:217HB  

Tensile  strength:1080(110)MPA  

Yield  strength: 930(95)MPA 

elogation:12%  Reduction  of  area:45%   AKV(impact  value):63J

5.Size Tolerance:

Length tolerance: +100mm/-0mm

Side length tolerance: +/-2mm

Straightness:Max 6mm/m

Quality Contation

Both end of each bar must be cut.

Ladle furnanced and vacuum de-gassed

Show heat No. on each bar

Alloy steel round bar

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