Click to enlarge
420 SS
Back to products
430 SS

422 SS

Our inventory now includes Alloy 422 (UNS  S42200) in round bar.

With better strength at higher temperatures, Type 422 (S42200) is an appealing alternative to Type 403.  Type 422 is a hardenable martensitic stainless steel which is being widely used for high temperatures up to 1200°F. It is capable of being heat treated to various high strength levels. It is often used in aircraft and power industries who require high strength/weight ratios from room temperature to 1200°F.

Inquiry
Category:
Description

Applications:

  • Aircraft parts
  • Steam and gas turbine components
  • High heat components
  • Rotors

Standards:

  • UNS: ASTM/ASTE 42200
  • DIN: 1.4935

Corrosion Resistance:

  • Adaptable to applications where maximum resistance to corrosion is not required.
  • Resistant to the corrosive action of the atmosphere, fresh water, steam, and a variety of the milder acids and alkalies.

Oxidation Resistance:

  • Good resistance to destructive scaling or oxidation
  • Continuous service at temperatures up to 1250F.
  • Temperature will vary with the type of atmosphere, type of construction, and cycle of operation.

Machineability

  • Comparable to 18-8 but easier to machine
  • Help avoid galling with sharply ground tools
  • Maintain consistent speed and feed
  • Turning tools: 8-14° side rake
  • Drilling: 140° point
  • Threading: grind tools with 10-15° back rake
  • Cobalt high-speed tools: turn at 90-120 sfpm, drill at 40-75 sfpm, mill at 70-120 sfpm, ream at 20-60 sfpm, roughing and finishing at 200-400 sfpm

Workability

  • Initial forging and rolling at 2100° to 2150°F (1149° to 1177°C)
  • 1700°F (927°C) minimum to hot work

Related products

403 SS

Our inventory includes Alloy 403 (UNS S40300) in round bar thru re-certification of 410 stainless steel. Other product forms such as plate may also be available by re-certifying 410 stainless steel to meet the requirements of 403. This straight chromium stainless steel offers reasonable corrosion resistance and high mechanical characteristics. The 403 Series offers heat resistance and a scaling temperature of about 1300°F. It is a corrosion and heat resistant 12% Cr martensitic stainless steel. This alloy offers a wide range of mechanical properties that are obtainable by appropriate heat treatments. It is easily hardened by oil, fan or air cooling and may be tempered at temperatures of up to 1350°F (732°C) to improve fracture toughness. Oil or fan cooling is required in thicker sections
Quick view

405 SS

Our inventory includes Alloy 405 (UNS S40500) in plate. Alloy 405 is a 12% chromium stainless steel designed to be used in the as-welded condition. Unlike the other grades of 12% chromium stainless, 405 is not vulnerable to extensive hardening through air cooling from high temperatures.
Quick view

409 SS

Our inventory now includes Alloy 409 (UNS S40900) in sheet, sheet coil, plate, round bar, processed flat bar and tubular products. Alloy 409 is a general purpose, chromium, titanium stabilized, ferritic stainless steel whose primary application is automotive exhaust systems. It contains 11% chromium which is the minimum amount for the formation of the passive surface film which gives stainless steels their corrosion resistance. It combines good elevated temperature corrosion resistance with medium strength, good formability, and overall cost. Alloy 409 resists corrosion strongly compared to carbon steel and is used as an alternative to carbon steel in mildly challenging environments where its high resistance to corrosion and high temperature oxidation gives an advantage. It is commonly used in applications where appearance is a secondary quality to mechanical properties and corrosion resistance.  
Quick view

410 SS

Our inventory now includes Alloy 410 (UNS S41000) in sheet, sheet coil, plate, round bar, processed flat bar and tubular products. Alloy 410 is the basic, general purpose martensitic stainless steel that is used for highly stressed parts and provides good corrosion resistance plus high strength and hardness. Alloy 410 contains a minimum of 11.5% chromium which is just sufficient enough to demonstrate corrosion resistance properties in mild atmospheres, steam, and many mild chemical environments. It is a general purpose grade that is often supplied in the hardened but still machineable condition for applications where high strength and moderate heat and corrosion resistance are required. Alloy 410 displays maximum corrosion resistance when it’s been hardened, tempered, and then polished.
Quick view

410HT SS

Our inventory now includes Alloy 410 HT  (UNS S41000) in sheet, sheet coil, plate, round bar, processed flat bar and tubular products. Alloy 410 HT is the basic, general purpose,  heat treated version of Type 410. It is a martensitic type, used for general purpose, where corrosion is not severe. Alloy 410 contains a minimum of 11.5% chromium which is just sufficient enough to demonstrate corrosion resistance properties in mild atmospheres, steam, and many mild chemical environments.
Quick view

416 SS

Our inventory now includes Alloy 416 (UNS S41600) in plate and round bar products. Alloy 416 is a martensitic, free-machining, chromium steel alloy that is generally considered to be the first free-machining stainless steel. It has the highest machinability of any stainless steel at about 85% of that of a free-machining carbon steel. Martensitic stainless steels were designed to be hardenable by heat treatment and also corrosion resistant. Although Alloy 416 and other martensitic stainless steels are not as resistant as austenitic or ferritic stainless, it still demonstrates good corrosion and oxidation resistance plus high strength in the hardened and tempered condition. Alloy 416HT is easily machined, is always magnetic, and has low frictional properties that reduce galling and seizing.
Quick view

416HT SS

Our inventory now includes Alloy 416HT  (UNS S41600) in sheet, sheet coil, plate, round bar, processed flat bar and tubular products. Type 416HT Stainless Steel is a stainless steel which is martensitic and has been hardened by heat treatment to higher strength and hardness levels. It has much better machining properties than the austenitic grades, but lower corrosion resistance.It has the highest machinability of any stainless steel at about 85% of that of a free-machining carbon steel. Martensitic stainless steels were designed to be hardenable by heat treatment and also corrosion resistant. Although Alloy 416HT and other martensitic stainless steels are not as resistant as austenitic or ferritic stainless, it still demonstrates good corrosion and oxidation resistance plus high strength in the hardened and tempered condition. Alloy 416HT  is easily machined, is always magnetic, and has low frictional properties that reduce galling and seizing.
Quick view

420 SS

Our inventory now includes Alloy 420 (UNS S42000) in sheet, sheet coil, plate, round bar, processed flat bar and tubular products. Alloy 420 is a hardenable, martensitic stainless steel that is a modification of Alloy 410. Similar to 410, it contains a minimum of 12% chromium, just sufficient enough to give corrosion resistant properties. Alloy 420 has higher carbon content than Alloy 410 which is designed to optimize strength and hardness characteristics. It has good ductility it the annealed condition but is capable of being hardened up to Rockwell hardness 50 HRC, the highest hardness of the 12% chromium grades. Due to its hardening properties, Alloy 420 is not often welded, although it is possible. Martensitic stainless steels are designed for high hardness and sometimes other properties are to some degree compromised. Corrosion resistance is lower than the common austenitic grades and their useful operating range is limited by their loss of ductility at sub-zero temperatures and loss of strength by over-tempering at elevated temperatures. Its best corrosion resistance is achieved when the metal is hardened and surface ground or polished.
Quick view