ASTM AISI 4140/4130/1020/1045 Hot Rolled & Cold Drawn Carbon Alloy Steel Round Bars

Oct 30, 2025

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Product Description

AISI 4140/4130/1020/1045 Hot Rolled Alloy Metal Iron Steel Rod ASTM 1018 1020 1045 1518 Cold Drawn Polished Bright Mild Carbon Round Steel Bars
 

ASTM AISI 4140/4130/1020/1045 Hot Rolled & Cold Drawn Carbon Alloy Steel Round Bars

ASTM AISI 4140/4130/1020/1045 Hot Rolled & Cold Drawn Carbon Alloy Steel Round Bars

 


Dimensions
Hot Rolled Round: dia.10-300 mm.


Delivery Condition
EAF+LF+VD, Hot Rolled or Forged, Black surface or Machined surface (Peeled, Turned, Grinded), Untreated or Normalized, UT 100% Passed



Equivalence

AISI / SAE DIN / W.Nr JIS GB
1045 CK45 C45E 1.1191 S45C 45#



Chemical Composition(%)

Steel Grade C Si Mn P S Cr Ni
CK45 C45E 1.1191 0.42-0.50 ≤ 0.40 0.50-0.80 ≤ 0.035 ≤ 0.035 ≤ 0.20 ≤ 0.10
1045 0.43-0.50 ---- 0.60-0.90 ≤ 0.040 ≤ 0.050 ≤ 0.05 ----
S45C 0.42-0.48 0.15-0.35 0.60-0.90 ≤ 0.030 ≤ 0.035 ≤ 0.20 ≤ 0.20

 

Steel Grade C Si Mn P S Cr Mo Ni Cu H2% (ppm)
4130 0.28-0.33 0.15-0.35 0.40-0.60 ≤ 0.025 ≤ 0.025 0.80-1.10 0.15-0.25 ≤ 0.25 ≤ 0.35 ≤ 2.00

 

Steel Grade C Si Mn P S Cr Mo
4140 0.38 0.15 0.75 0.80 0.15
0.43 0.35 1.00 0.035 0.040 1.10 0.25

Characteristics
AISI 1045 is a medium carbon steel is used when greater strength and hardness is desired than in the
"as rolled" condition. Extreme size accuracy, straightness and concentricity combine to minimize wear
in high speed applications.



Applications
Quenched and subsequently tempered steel for screws, forgings, wheel tyres, shafts, sickles, axes, knives, wood working drills, hammers, etc.

 

Main Products

ASTM AISI 4140/4130/1020/1045 Hot Rolled & Cold Drawn Carbon Alloy Steel Round Bars

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