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Designation |
Process
O : Open-arc
G : Gas shielded
S : Submerged arc
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Standards DIN 8555
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Hardness
3 layers as welded
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Description and applications
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53 HRC
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Excellent hot and cold abrasion properties with low coefficient of friction. Erosion and oxidation resistance to over 1000°C. Do not use in applications involving impacts and where crack free welds are essential. Used on steam valves, wire guides, rubber and plastic mixers, extrusion screws and conveyors |
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38 HRC
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Equivalent alloy to Stelloy 6 with less carbon. Easier to machine and less sensitive to cracking compared to standard Stelloy 6. Used in automatic and semi-automatic welding where the use of Stelloy 6 would give cracking problems. Applications : valve seats, valve gates, valve wedges and directly on valve and cylinder bodies. |
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MF 20-GF-40-CTZ
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MSG 20-GF-40-CTZ
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42 HRC
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Combines all the outstanding properties of cobalt base alloys i.e. excellent erosion and corrosion resistance. Very good metal to metal wear resistance: maintains hardness to elevated temperatures and can be machined. Used extensively on valve seats of diesel engines, cams, chainsaw bars, hot shear blades, hot and cold forming rolls and hot forming rolls, hot rolling reinforcing bars, pump parts and components in hot zinc baths |
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44 HRC
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Equivalent alloy to Stelloy 6 with more carbon. Designed for one layer MIG applications requiring a 40-42 HRC with 10% dilution. Used in small valves and valve gates, chainsaw bars and extrusion dies. |
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45 HRC
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Exceptional resistance to metal-to-metal wear in corrosive media at high temperatures. Acceptable resistance to impacts / thermal shocks. Retains hardness to high temperatures and is less likely to crack than Stelloy 1. Used on saw teeth, cams, shafts, tappets and push rods for engines, screw conveyors and augers for rubber and plastics, seats and valves for oil and gas |
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MF 20-GF-350/50-CKTZ
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MSG 20-GF-350/50-CKTZ
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33 HRC
47 HR
Cécroui
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33 HRC as welded but workhardens to 47 HRC. Less crack sensitive than the other alloys, it is used for build up and on large-scale sections. Excellent metal to metal wear combined with good corrosion resistance. Used for integral seats and guides of large water and high-pressure valve bodies, drop forging dies, pump shafts and sleeves, hot punches, etc. |
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210 HB
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Alloy with moderate hardness which drops only slightly with rising temperature. Insensitive to cracking, the deposit becomes polished through contact with hot metals. Insensitive to creep, this alloy is used for tube-piercing mandrel heads, vertical mill rolls and straightening guides. |
