ASTM A387/A387M A387 K31545 Introduce

ASTM A387/A387M A387 K31545 plates have excellent corrosion resistance. The chemical structure of ASTM A387/A387M A387 K31545 steel plates contains chromium, molybdenum and other elements in order to increase their corrosion resistance and toughness. The molybdenum increases the overall corrosion resistance of the alloy, and chromium forms a protective layer on the surface that increases its resistance to corrosion. The alloy also contains small amounts of silicon and nitrogen in order to further enhance its corrosion resistance.

Smelting temperature:1628°C - 1492°C

Application:Pressure vessel plate, alloy steel, chrome molybdenum

ASTM A387/A387M A387 K31545 Material Chemical Composition

The chemical composition of the ASTM A387/A387M A387 K31545 steel are as follows:

ElementMinMax
Silicon (Si)-0.5000
Sulfur (S)-0.0250
PhOsphorus (P)-0.0250
Molybdenum (Mo)0.85001.1500
Manganese (Mn)0.25000.6600
Chromium (Cr)2.63003.3700
Carbon (C)0.04000.1500

ASTM A387/A387M A387 K31545 Material Mechanical Properties

ASTM A387/A387M A387 K31545 steel requires either normalizing, tempered/quenched, or annealing treatments. Normalizing temperatures should be set between 845-925°C followed by air cooling. Tempered/quenched treatments involve heating the steel to 790-845°C and then quenching the steel in water or oil. Alternately, annealing treatments can be done at a temperature range of 760-845°C and air cooling.

The mechanical properties of the ASTM A387/A387M A387 K31545 steel are as follows:

YieldRp0.2 ≤ 466 (MPa)
TeileRm≤ 224 (MPa)
ImpactKV/Ku14(J)
ElongationA12%
Reduction in cross section on fractureZ23%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)223

ASTM A387/A387M A387 K31545 Material Thermal Properties

The thermal performance parameters of the ASTM A387/A387M A387 K31545 steel are as follows:

Temperature (°C)41711978
Modulus of elasticity (GPa)-994-
Mean coefficient of thermal expaion ×10-6/(°C)--42
Thermal conductivity (W/m·°C)-42.323.2
Specific thermal capacity (J/kg·°C)-321-
Specific electrical resistivity (Ω mm²/m)0.14--
Deity (kg/dm³)--344
Poisson’s coefficient, ν--434

ASTM A387/A387M A387 K31545 Material Machining Technology

ASTM A387/A387M A387 K31545 steel is a popular choice among manufacturers and machinists as it is corrosion and oxidation-resistant, tough, and affordable. It is also heat-treatable and can be machined with relative ease.