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420 stainless steel MACHINEABILITY,420 stainless steel Welding

Posted:2015/2/3 0:58:25

420 stainless steel is a martensitic higher carbon version of types 410 and 416 stainless that can be hardened by heat treatment.

420 stainless steel Chemistry Typical
Carbon: 0.30-0.40
Manganese: 1.00 max
Silicon: 1.00 max
Chromium: 12.00-14.00
Nickel: 0.50 max
Molybdenum: 0.50 max
Phosphorus: 0.040 max
Sulfur: 0.030 max
Copper: 0.50 max
Aluminum: 0.15 max
Silicon: 0.050 max
Iron: Balance
It contains a minimum of 12 percent chromium, sufficient to give 420 corrosion resistance properties.

420 stainless steel APPLICATIONS
420 Stainless is commonly used for dental and surgical instruments, pump shafts, plastic molds and dies, steel balls, various hand tools, lens molds, scissors, straight edges, cutlery, gauges, needle valves, ball check valves, gear shafts, cams, pivots, ball bearings, etc.

420 stainless steel MACHINEABILITY
Machinability is rated at 30% of B1112. Similar to machining high-carbon, high-chromium tools steels, but 420 creates tough, stringy chip buildup.

420 can be hot worked by slowly bring temperature to 1400° F, then on to 2000°-2200°F.Reheat often to keep the temperature above 1600°F. After working, cool in furnace slowly to avoid cracking. 420 will withstand only minor cold working. Radical forming operations will result in cracking.

420 stainless steel Welding
The martensitic class of stainless steels has limited weldability due to its hardenability. For best results refer to: SSINA's "Welding of Stainless Steels and Other Joining Methods".

420 stainless is not commonly welded due to its air hardening characteristics. Welding may be performed after preheating to 300°-400°F with post weld tempering at temperature for 2 hours.

as a 420 stainless steel supplier in China , any need in 420 stainless steel Chemistry , 420 stainless steel MACHINEABILITY or 420 stainless steel Welding , please contact katalor !

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