UNS S50400
2026-07-25 16:50:00 Origin： Remark：0 Click：
Technical specifications of UNS S50400 martensitic alloy steel, UNS S50400 properties, round bar, flat bar, plate heat treated, cold machined
TECHNICAL DATA SHEET - UNS S50400
MATERIAL CATEGORY: martensite type 9Cr-1Mo
RODUCT DESCRIPTION
The alloy is usually produced by EF + AOD + VD followed by electroslag refining (ESR) / VAR if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied black/bright in the annealed condition.
Final heat treatment - solution treatment / QT
The alloy is usually produced by EF + AOD + VD followed by electroslag refining (ESR) / VAR if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied black/bright in the annealed condition.
Final heat treatment - solution treatment / QT
MATERIAL SPECIFICATIONS - ASTM A959 (2004), A276, A312, A632, A176, A580
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): ≤ 0.15
Silicon, Si (％): ≤ 1.00
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％): ≤ 0.040
Sulfur, S (％): ≤ 0.030
Chromium, Cr (％): 8.00 ~ 10.0
Nickel, Ni (％): -
Molybdenum, Mo (％): 0.90 ~ 1.10
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Condition of heat treatment: QT
Tensile strength, σb / MPa: 680
Yield strength, σ0.2 / MPa: 575
Elongation, δ5 (％): 13.0
Reduction of area, ф (％): -
Hardness | HRB: 197
Reduction of area, ф (％): -
Hardness | HRB: 197
HEAT TREATMENT PRACTICE
Heat treatment is only suitable for specific grades of stainless steel. When heat treating a stainless the hardening temperatures, including rate of heating, cooling and soaking times will vary due to several factors such as the shape and size of each component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult with the heat treatment provider for whole guidance on heat treatment of stainless steel grades. We are delighted to help to work with you the special heat treatment based on your special requirements.
Heat treatment is only suitable for specific grades of stainless steel. When heat treating a stainless the hardening temperatures, including rate of heating, cooling and soaking times will vary due to several factors such as the shape and size of each component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult with the heat treatment provider for whole guidance on heat treatment of stainless steel grades. We are delighted to help to work with you the special heat treatment based on your special requirements.
TYPICAL APPLICATIONS
Chemical equipment
Mechanical parts used in the condition of corrosion resistance
Bolt and nut
Pressure vessel.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers. E-mail: sales@ccsteels.com
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers. E-mail: sales@ccsteels.com
PROFILE AND DIMENSION
Round bar & disc (diameter): 6.0 to 800 mm
Square bar & flat bar: 10 to 600 mm
Plate & strip: 0.4 to 300 mm
Width: 8 to 1000 mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts, and other different shapes based on OEM.
Round bar & disc (diameter): 6.0 to 800 mm
Square bar & flat bar: 10 to 600 mm
Plate & strip: 0.4 to 300 mm
Width: 8 to 1000 mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts, and other different shapes based on OEM.
