ASTM A533/A533M A533 Grade C Class 3 Introduce

ASTM A533/A533M A533 Grade C Class 3 is a kind of nuclear pressure vessel steel.In order to meet different needs of designers, alloy components concentration and other rules of ASTM A533/A533M are not exactly the same.

Smelting temperature:1524°C - 1219°C

Application:Pressure vessel plates, alloy steel, quenched and tempered, manganese, molybdenum and manganese molybdenum nickel

ASTM A533/A533M A533 Grade C Class 3 Material Chemical Composition

The chemical composition of the ASTM A533/A533M A533 Grade C Class 3 steel are as follows:

ElementMinMax
Molybdenum (Mo)0.45000.6000
Nickel (Ni)0.70001.0000
PhOsphorus (P)-0.0350
Sulfur (S)-0.0350
Manganese (Mn)1.15001.5000
Silicon (Si)0.15000.4000
Carbon (C)-0.2500
Silicon (Si)0.13000.4500
Sulfur (S)-0.0250
PhOsphorus (P)-0.0250
Nickel (Ni)0.67001.0300
Molybdenum (Mo)0.41000.6400
Manganese (Mn)1.07001.5000

ASTM A533/A533M A533 Grade C Class 3 Material Mechanical Properties

The physical and mechanical properties of steel are important for its performance in various applications. The ASTM A533/A533M standard states the required properties for both Grade A and Grade B steel, such as the tensile strength, yield strength, hardness, elongation, malleability, toughness, weldability, and corrosion resistance.

The mechanical properties of the ASTM A533/A533M A533 Grade C Class 3 steel are as follows:

YieldRp0.2 ≤ 553 (MPa)
TeileRm≤ 779 (MPa)
ImpactKV/Ku44(J)
ElongationA31%
Reduction in cross section on fractureZ41%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)322

ASTM A533/A533M A533 Grade C Class 3 Material Thermal Properties

The thermal performance parameters of the ASTM A533/A533M A533 Grade C Class 3 steel are as follows:

Temperature (°C)22751179
Modulus of elasticity (GPa)-451-
Mean coefficient of thermal expaion ×10-6/(°C)--22
Thermal conductivity (W/m·°C)-21.332.2
Specific thermal capacity (J/kg·°C)-211-
Specific electrical resistivity (Ω mm²/m)0.44--
Deity (kg/dm³)--242
Poisson’s coefficient, ν--233

ASTM A533/A533M A533 Grade C Class 3 Material Machining Technology

ASTM A533/A533M A533 Grade C Class 3 steel is highly weldable, and is typically used in applications where welding is required. The steel is not pre- or post-heat treated before welding, but it must undergo low-temperature preheating to avoid hydrogen embrittlement.