AISI 4140 Alloy Steel Plate & Sheet
AISI 4140 Alloy Steel Plate & Sheet
Model
4140

Item specifics

Process
Hot Rolled / Cold Rolled
Surface
Black / Bright

Review

Description

Introduce 
AISI 4140 steel is a low alloy steel containing chromium, molybdenum, and manganese. It is widely used across numerous industries and is an excellent material choice due to its toughness, high fatigue strength, and abrasion and impact resistance. Not many grades can match the versatility and usefulness of 4140.
Applications  
This alloy finds many applications as forgings for the aerospace and oil and gas industries, along with myriad uses in the automotive, agricultural and defense industries, Typical uses are forged gears and shafts, spindles, fixtures, jigs and collars.
Chemical Component
Grade
C
Si
Mn
P MAX
S MAX
Cr
Mo
4140
0.38-0.43
0.15-0.35
0.75-1.00
0.035
0.035
0.80-1.10
0.15-0.25
Produce Size
Process
Thickness
Width
Length
Hot Rolled
4-30mm
20-1500mm
500-9000mm
Cold Rolled
0.5-4mm
10-1000mm
200-9000mm or Coil
Property
Annealing 
AISI 4140 alloy steel is annealed at 872°C (1600°F) followed by slowly cooling in the furnace.
Machinability  
AISI 4140 alloy steel has good machinability in the annealed condition.
Welding 
AISI 4140 alloy steel can be welded using all conventional techniques. However, the mechanical properties of this steel will be affected if it is welded in the heat-treated condition, and post-weld heat treatment should be performed.
Forming  
AISI 4140 alloy steel has high ductility. It can be formed using conventional techniques in the annealed condition. It requires more pressure or force for forming because it is tougher than plain carbon steels.
Produce Show
chinese alloy steel plate factory