ASTM A890 Grade 4A
2014-11-10 14:52:48 Origin： Remark：0 Click：
Technical specifications of ASTM A890 Grade 4A Duplex Stainless steel, CD3MN Round bar, A890 type 4A Hot forging, rolling, heat treatment, cold working.
MATERIAL DATA SHEET - ASTM A890 Grade 4A & CD3MN
MATERIAL CATEGORY: Duplex stainless steel - 22Cr-5Ni-3Mo-N
PRODUCT DESCRIPTION
The alloy is usually produced by AOD / VOD 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
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, A564
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): ≤ 0.030
Silicon, Si (％): ≤ 1.00
Manganese, Mn (％): ≤ 1.50
Phosphorus, P (％) ≤: 0.040
Sulfur, S (％) ≤: 0.020
Nickel, Ni (％): 4.50 ~ 6.50
Chromium, Cr (％): 21.0 ~ 23.0
Molydenum, Mo (％): 2.50 ~ 3.50
Silicon, Si (％): ≤ 1.00
Manganese, Mn (％): ≤ 1.50
Phosphorus, P (％) ≤: 0.040
Sulfur, S (％) ≤: 0.020
Nickel, Ni (％): 4.50 ~ 6.50
Chromium, Cr (％): 21.0 ~ 23.0
Molydenum, Mo (％): 2.50 ~ 3.50
Copper, Cu (%): ≤ 1.00
Nitrogen, N (%): 0.10 ~ 0.30
TYPICAL MECHANICAL PROPERTIES
Condition: solution, annealed
Tensile strength, σb/MPa: ≥ 621
Yield strength, σ0.2/MPa: ≥414
Elongation, δ (％): 25.0
Reduction of area, ф (％): -
Elongation, δ (％): 25.0
Reduction of area, ф (％): -
Hardness | HRB: 90RB ~ 25RC
Stainless Steel Rod, Bar, Wire, Cold drawn, ground and polishedStandard length of bars: 2 - 3 meter.
Austenitic Stainless Steel for implants, with high corrosion resistance.
According to ISO 5832/1, F-138 Vacuum melt grade (VAR)
For surgical instruments, fracture fixation devices, screws for implants and many more similar applications.
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.
TYPICAL APPLICATIONS
Chemical equipments and parts.
Mechanical parts used in the condition of corrosion resistance.
Bolts and nuts, Pressure vessel.
PRODUCT PROFILE & DIMENSION
Round bar / Disc (diameter): 5.5 to 850mm
Square bar / Flat bar: 10 to 1000mm
Plate / Sheet steel / Steel strip: 1 to 500mm
Width: 8mm to 1200mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts, other different shapes based on OEM.
Square bar / Flat bar: 10 to 1000mm
Plate / Sheet steel / Steel strip: 1 to 500mm
Width: 8mm to 1200mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our sales team - Email: sales@ccsteels.com
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