SAE J404 4137 Introduce

SAE J404 4137 is an American steel grade that is used in a range of applications. It is a low-alloy steel, with alloying elements that give it a range of desirable properties. These include good mechanical properties, corrosion resistance, and heat treatability. This makes it an ideal choice for a wide variety of manufacturing applications, from automotive components to structural components and heavy machinery.

Smelting temperature:1938°C - 1232°C

Application:Chemical compositions of SAE alloy steels

SAE J404 4137 Material Chemical Composition

The chemical composition of the SAE J404 4137 steel are as follows:

ElementMinMax
Silicon (Si)0.15000.3500
Sulfur (S)-0.0400
PhOsphorus (P)-0.0350
Nickel (Ni)-0.2500
Molybdenum (Mo)0.15000.2500
Manganese (Mn)0.65000.9500
Copper (Cu)-0.3500
Chromium (Cr)0.80001.1500
Carbon (C)0.33000.4000
Sulfur (S)-0.0400
Lead (Pb)0.15000.3500
PhOsphorus (P)-0.0300
Manganese (Mn)0.70000.9000
Carbon (C)0.35000.4000

SAE J404 4137 Material Mechanical Properties

The alloying elements present in SAE J404 4137 steel endow it with a range of mechanical properties. It is a relatively low-carbon steel, meaning that it is fairly soft and ductile and can be easily machined and welded. This makes it a popular choice for a wide range of applications. The steel has an ultimate tensile strength of around 400 MPa, a yield strength of 250 MPa, and an elongation of 16-22%.

The mechanical properties of the SAE J404 4137 steel are as follows:

YieldRp0.2 ≤ 424 (MPa)
TeileRm≤ 932 (MPa)
ImpactKV/Ku11(J)
ElongationA21%
Reduction in cross section on fractureZ34%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)113

SAE J404 4137 Material Thermal Properties

The thermal performance parameters of the SAE J404 4137 steel are as follows:

Temperature (°C)31474773
Modulus of elasticity (GPa)-589-
Mean coefficient of thermal expaion ×10-6/(°C)--41
Thermal conductivity (W/m·°C)-32.334.2
Specific thermal capacity (J/kg·°C)-131-
Specific electrical resistivity (Ω mm²/m)0.43--
Deity (kg/dm³)--141
Poisson’s coefficient, ν--424

SAE J404 4137 Material Machining Technology

SAE J404 4137 steel is a medium carbon steel that contains up to 0.55% carbon, 0.30% manganese and 0.80% silicon. It is known for its high hardenability, being able to attain very high Rockwell hardness ratings of up to 62 HRC – making it a particularly hard and difficult material to machine. Furthermore, although SAE J404 4137 steel is a hard material, it is also a highly ductile one with excellent formability. As a result, it is a popular choice of material across several industries, including automotive, aerospace, and medical.