Atom Arc 4340
Atom Arc 4340 is an all-position, iron powder, low hydrogen electrode developed for the welding of heat-treatable, high strength steels such as SAE 4130, 4330, 4340 and steel castings with similar hardening properties. Weld metal responds to heat treatment similar to 4340 base metal and is intended for use only in postweld heat treated applications.
Typical Tensile Properties
| Austenitized 871 °C (1600 °F) Oil Quenched Tempered at 621 °C (1150 °F) | Austenitized 871 °C (1600 °F) Oil Quenched Tempered at 510 °C (950 °F) | |
| Reduction in Area | 38.5 % | 43 % |
| Tensile Strength | 1303 MPa (189 ksi) | 1040 MPa (160 ksi) |
| Yield Strength | 1179 MPa (171 ksi) | 951 MPa (138 ksi) |
| Elongation | 12 % | 15 % |
Classifications
| Name | No AWS Classification |
Consumable Characteristics
| Coating Type | Low-hydrogen iron powder |
| 0 | |
| Welding Current | AC or DC+ |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Cr | Mn | Mo | Ni | P | S | Si | |||||||
| 0.35 % | 0.80 % | 0.85 % | 0.25 % | 1.80 % | 0.011 % | 0.014 % | 0.50 % | |||||||