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Farwest invests in an extensive AISI alloy plate inventory to support your manufacturing requirements.

Inventoried AISI alloy steel plate is sourced in the As Rolled condition. Custom parts are typically heat treated to achieve the desired physical properties.

AISI 4140

Farwest is proud to carry AISI 4140 inventory sourced in the As Rolled condition ranging from 3/8” to 4 1/4” thick primarily in 96” wide.

Yield KSI 60
Tensile KSI 95
C - Carbon 0.38 - 0.43
Mn - Manganese 0.75 - 1.0
P - Phosphorus 0.035
S - Sulphur 0.04
Si - Silicon 0.15 - 0.35
Cr - Chromium 0.8 - 1.1
Mo - Molybdenum 0.15 - 0.25

AISI 1040/45

Farwest is proud to carry AISI 1040/45 inventory sourced in the As Rolled condition ranging from 3/16” to 4” thick primarily in 96” wide.

Yield KSI 48
Tensile KSI 85
Elongation % in 2" 22 Min
Brinell Hardness 179
C - Carbon 0.37 - 0.5
Mn - Manganese 0.6 - 0.9
P - Phosphorus 0.04
S - Sulphur 0.05

Physical and chemical properties are provided for a quick reference only. Please refer to the specification publisher for official physical and mechanical properties. ASTM specifications can be found here.

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