Alloy 422 is a hardenable stainless steel designed for use at temperatures of up to 1200ºF (649ºC). Alloy 422 has good resistance to scaling and oxidation. Through heat treatment, high mechanical properties can be developed. Alloy 422 is used in applications such as compressors or steam turbines and also in aircraft parts, valves, high temperature bolting etc. 

Steel Grade: AISI 422 | UNS: S42200 | Type: Martensitic

CHEMICAL COMPOSITION:
C(%) :     0.20～0.25
Si(%) :     ≤0.75
Mn(%) :     ≤1.00
P(%)≤ :     0.04
S(%)≤ :     0.03
Cr(%) :     11.5～13.5
Ni(%) :     0.50～1.00
Mo(%) :     0.75～1.25
Other(%) :     V0.15～0.30,W0.75～1.25

MECHANICAL PROPERTIES:
Variety② :     B,F   B,F
Condition③ :     T(675℃)   T(620℃)
Tensile Strength|σb/MPa :     825   965
Yield Strength|σ0.2/MPa :     585   760
Extensibility|δ(％) :     17⑤   13
Reduction of Area|ψ(％) :     35   30
Standard ASTM :     A565   A565

Remark:
②, B─Bar；F─forging；P─Thick plate；Sh─Sheet；St─Strip；Pi,T─Pipe steel；S-Pi,T─Seamless Pipe steel； W-T─Welded Pipe；Sp─Shape；W─wire.
③, A─Annealing；HF─Hot Forging；CF--Cold Drawing.
④, When the thinkness is under 1.3mm, the δ is 20%.
⑤, The δ of forging is above 15%.

AISI Type 422 Mechanical properties, Our production completely according to the AISI Type 422 standards to meet the AISI Type 422 mechanical performance, can also according to the customer request, to meet the requirements of customers of AISI Type 422 mechanical properties.
Heat treatment
AISI Type 422 Heat treatment, our production completely according to the AISI Type 422 standards to meet the AISI Type 422 Heat treatment, can also according to the customer request, to meet the requirements of customers of AISI Type 422 Heat treatment.
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


Please check this attached for sheet data