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ASTM 4135

ASTM 4135

ASTM 4135 Alloy Steel
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ASTM 4135 Alloy Steel



Material Name


Material Name: ASTM 4135
Execution standard: ASTM A29/A29M-04

Characteristics and scope of application


With high static strength, impact toughness and high fatigue limit, the toughness of is higher than that of 40Cr, high creep strength and lasting strength at high temperature, long-term working temperature can be up to 500℃， During the cold deformation, the plastic medium is poor, and the welding property is poor. It is used as an important structural part of the work under high load, such as the transmission parts of the vehicle and the engine, the rotor of the steam turbine generator, the main shaft, the transmission shaft of the heavy load, and the large section parts.


Chemical Composition


C
 Si Mn S P
 		Cr Ni Cu
 Mo
0.33-0.38
 0.15-0.35 0.70-0.90
 Max 0.040 Max 0.035
 0.80-1.10 Max 0.030 Max 0.030 0.15-0.25

Mechanical Properties


Tensile strength
σb (MPa) 		Yield Strength
σs 0.2 (MPa)
Elongation
δ 5 (％)
reduction of crosssection area
ψ (％)
 ballistic work
Akv (J) 		pounding toughness value
αkv (J/cm2)
Hardness
(HB)
specimen size
Min 985 Min 835 Min 12 Min 45
 Min 63
 Min 78
   Max 229 25mm

specification of heat treatment and metallurgical structure


Specification of heat treatment : hardening 850℃ oil cooling, tempering 550℃ water cooling, oil cooling.

Delivery State


In the heat treatment (quenching, annealing or tempering) or heat treatment delivery, delivery status should be indicated in the contract.