OK 13Mn
OK 13Mn is an austenitic manganese steel electrode which work hardens under impact and compressive stresses. It is primarily used for surfacing and building up manganese steel components exposed to severe impact and moderate abrasion. Typical applications include crusher plates and rolls, cones and mantles of rotary crushers etc. The interpass temperature should be kept as low as possible.
Typical Charpy V-Notch Properties
| Impact Value | Testing Temperature | |||
| as welded iso | ||||
| 45 J (33 ft-lb) | -20 degC (-4 degF) | |||
| 35 J (26 ft-lb) | -40 degC (-40 degF) | |||
| 25 J (19 ft-lb) | -60 degC (-76 degF) | |||
| 70 J (52 ft-lb) | 20 degC (68 degF) | |||
Typical Tensile Properties
| Condition | Elongation | Shielding Gas | Tensile Strength | Yield Strength |
| As Welded | 20 % | ISO | 780 MPa (113 ksi) | 480 MPa (70 ksi) |
Deposition Data
| Current | Fusion time per electrode at 90% I max | Deposition Rate @ 90% I max | Diameter | Deposition Efficiency (%) | Number of electrodes/kg weld metal | Voltage |
| 95-135 A | 95 sec | 1.1 kg/h (2,4 lb/h) | 3.2 x 450.0 mm (1/8 x 17,7 in.) | 60 % | 36 | 23 V |
| 130-180 A | 109 sec | 1.4 kg/h (3,1 lb/h) | 4.0 x 450.0 mm (5/32 x 17,7 in.) | 60 % | 24 | 23 V |
| 170-230 A | 132 sec | 1.8 kg/h (4,0 lb/h) | 5.0 x 450.0 mm (0.197 x 17,7 in.) | 60 % | 15 | 25 V |
Classifications
| Grade | E Fe9 |
| Name | EN 14700 |
Consumable Characteristics
| Alloy Type | Austenitic Mn steel |
| Coating Type | Lime Basic |
| Welding Current | AC, DC+ |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Mn | Si | ||||||||||||
| 1.08 % | 12.2 % | 0.7 % | ||||||||||||