Specifications:
AMS 6457; UNS K13147, MIL-R-5632
Description:
WT 4130VM is a vacuum melted low alloy steel welding wire and is used due to its lighter weight and it is used to improve weldability in highly stressed joints of low alloy steel structures. The weld deposit has extremely low trace element content including interstitial gases. 4130VM is welded in the armealed or over tempered condition, then the entire weldment is heat treated to the desired strength or hardness. Primarily used to inert-gas-arc weld base metals of similar composition requiring joints with strength, corrosion and heat resistance comparable to those of the base metal. Flag tagged on one end per AMS 2816, flag tagged two ends, vapor barrier packaging available.
Available in multiple sizes and diameters.
When austenitized at 1550-1625 °F and oil or water quenched:
Approx. Tempering Temp (°F): 1250; Room Temp Tensile Strength (PSI): 100,000
Approx. Tempering Temp (°F): 1050; Room Temp Tensile Strength (PSI): 120,000-140,000
Approx. Tempering Temp (°F): 925; Room Temp Tensile Strength (PSI): 140,000-160,000
Approx. Tempering Temp (°F): 725; Room Temp Tensile Strength (PSI): 180,000-200,000
Typical Chemical Composition (Wt%)
| C | Cr | Mo | Fe |
| 0.28-0.33 | 0.95 | 0.20 | BAL |
