ASTM A508/A508M Grade 5 Class 1 Introduce

ASTM A508/A508M Grade 5 Class 1 provides a higher strength-to-weight ratio than standard carbon steels. It can easily be welded and is damage-resistant, decreasing the possibility of stress-induced fatigue failure. The addition of vanadium and niobium improves the microstructure and contributes to the steels superior strength and impact properties. The steel is tested for a variety of conditions for mechanical properties, including hardness, toughness, yield strength, tensile strength, microstructure, elongation, impact resistance, and grain size. ASTM A508/A508M Grade 5 Class 1 offers a number of advantages for applications that require high strength, good impact resistance and increased corrosion resistance. It is an economical solution for a variety of applications, making it a great choice for industrial and commercial projects.

Smelting temperature:1577°C - 1349°C

Application:Carbon steel and alloy steel forgings for quenching and tempering vacuum treatment of pressure vessels

ASTM A508/A508M Grade 5 Class 1 Material Chemical Composition

The chemical composition of the ASTM A508/A508M Grade 5 Class 1 steel are as follows:

ElementMinMax
Carbon (C)-0.2300
Manganese (Mn)0.20000.4000
PhOsphorus (P)-0.0200
Sulfur (S)-0.0200
Silicon (Si)-0.3000
Nickel (Ni)2.80003.9000
Chromium (Cr)1.50002.0000
Molybdenum (Mo)0.40000.6000
Copper (Cu)-0.2500
Vanadium (V)-0.0800
(Cb)-0.0100
Titanium (Ti)-0.0150
Calcium (Ca)-0.0150
Boron (B)-0.0030
Aluminum (Al)-0.0250
Silicon (Si)-0.3000
Aluminum (Al)-0.0250

ASTM A508/A508M Grade 5 Class 1 Material Mechanical Properties

The mechanical properties of the ASTM A508/A508M Grade 5 Class 1 steel are as follows:

YieldRp0.2 ≤ 893 (MPa)
TeileRm≤ 465 (MPa)
ImpactKV/Ku31(J)
ElongationA12%
Reduction in cross section on fractureZ33%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)411

ASTM A508/A508M Grade 5 Class 1 Material Thermal Properties

The thermal performance parameters of the ASTM A508/A508M Grade 5 Class 1 steel are as follows:

Temperature (°C)11895636
Modulus of elasticity (GPa)-462-
Mean coefficient of thermal expaion ×10-6/(°C)--43
Thermal conductivity (W/m·°C)-24.343.2
Specific thermal capacity (J/kg·°C)-233-
Specific electrical resistivity (Ω mm²/m)0.44--
Deity (kg/dm³)--221
Poisson’s coefficient, ν--224