4.0mm NSB-307 Nikko Steel - E307-16 Stainless Steel MMA Welding Rods
Complete with CE approval these rods conform to AWS A5.4 E307-16
4.0mm in diameter these rods are perfect slightly thicker sections of stainless steel welding jobs. Recommended amperage is 140-190 amps and they are sold in packs of 1kg.
Perfect for the more difficult to weld materials as well as the prime option to be used as a 'buffer' layer between standard steel and the hard faced surface layer. These rods can be used in both AC and DCEP setup.
Rod Description:
The design of the electrode is synthetic, ie: a mild steel core wire with the alloying elements contained in the flux. The weld deposit is austenitic and metal recovery is some 135% with respect to weight of the core wire. A blend of silicates is used to bind the flux that ensures both coating strength and resistance to moisture absorption.
Welding Features:
The electrode is stable on both AC and DC. Initial arc strike is easy, as is restriking. The weld seams are smooth, bright and convex in shape. Slag is readily detachable. The weld metal is more resistant to solidification cracking than straight 14Mn types thus allowing higher pre-heats and interpass temperatures to be used on thick sections.
Applications:
The electrode may be used to weld Hadfield 13/14% manganese steel or similar, or surfacing mild steel components. As deposited the weld is soft and ductile but under impact loading, it rapidly work hardens and thus resistant to wear by friction and abrasion. Recommended for rail tracks, crossing parts, crusher rolls, bucket teeth and similar.
Typical Composition:
C: 0.1
Mn: 4.2
Si: 0.5
S: 0.02
P: 0.02
Cr: 20.1
Ni: 10
Mo: 0.7
Cu: 0.1
Fe: Balance
Hardness:
Hardness using pre-heat or interpass temperature up to 200°C on either mild steel (3 layers) or 14Mn steel (1 layers) HV as welded 220 work hardening will achieve HV450. The weld metal is not-heat-treatable, thus surfaced thick steel sections may be stress relieved.
Rebaking:
Electrodes that have become damp should be re-dried at 150 degrees C for 1 hour.
The 307-16 stainless rods can be used down hand only. For all additional position welding please see our 307-17 rods.
Following positions for use.
PA - 1G, 1F, 1FR - Flat Position
PB - 2F, 2FR - Horizontal Vertical Position