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SLS 14%® - Approved Welding Rod and Wire
lends itself to higher ductility in the weld heat-affected zone since all stock is thermally treated before shipment. Control of welding heat input is essential to minimize embrittlement. None of these steels should be given a low temperature (1000/1200° F) stress-relief after welding, due to the possibility of embrittlement. Austentic Manganese Steels should not be pre-heated not post-heated for welding.
Manual Arc - For manual metal-arc welding, several good proprietary high-manganese (AWS E-FEMN-A) electrodes are available. Best quality welds are made with austenitic stainless (AWS-E309 or 310) electrodes, although such joints may not be as abrasion-resistant as those made with high-manganese electrodes. “Stoody” twin-cote manganese rod or equivalent is recommended.
MIG or submerged-arc welding - For either MIG or submerged-arc welding, stainless wire and wire-flux combinations are available. High manganese wire is also available for submerged-arc and for open-arc welding.
Oxyacetylene gas welding is not recommended
SLS 14%® - Recommended Material Processing
Forge at 2100° F. This steel has good hot working characteristics and forges readily.
SLS 14% Manganese should be annealed after forging. To fully anneal, heat to 1900° F and quench in water. This results in softest condition – 180/200 BHN.
Austenitic Manganese Steels should be cut without pre- or post-heating. Use of iron
powder or plasma arc cutting, when cutting material over 1/2" thick, may help to prevent ragged edges.
SLS 14% Manganese can be cold formed in brake or rolled in thicknesses up to and including 1/2". A strength ratio of 2:1 on bending or rolling equipment is required compared to mild steel. More generous radii are suggested on most cold forming applications. SLS 14% Manganese Steel is fully treated for extensive fabrication – insures against cracks or seams following forming
SLS 14% Manganese Steel is not a free machining steel. Metal will tend to work harden just ahead of the cutting tool. Various techniques have been developed to drill or machine this type of material. Generally, the following technique or procedure has been most successful:
1. Use blunt drills – Tungsten Carbide (or) High Speed.
2. Sulphurized cutting oil.
3. Heavy Feed (once drilling or machining has started, complete operation without let-up).
We recommend the use of St. Lawrence Steel’s fabrication services to eliminate errors in the processing and fabrication with SLS 14% Manganese Steel.
SLS 14%® - Manganese Steel
SLS 14% Manganese Steel is one of the toughest steels available. Sometimes known as “Hadfield Manganese,” the basic composition has not changed except for the addition of small quantities of nickel and molybdenum to prevent embrittlement. Under cold work or impact its surface work hardens to three times its original state. This alloy is easily weldable and will retain its toughness at all times. All of these features, plus a tensile strength in excess of 150,000 psi, make for ideal abrasive/impact resistant service.
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