ASTM A890 Gr.4A
Specification ASTM A890 Gr.4A datasheet, ASTM A890 Gr.4A Chemical, A890 Grade 4A properties from steelmaking,hot forging, hot rolling, heat treatment, cold working. We also possess advanced precision machining equipments for further processing
| Product parameters | |
| Material Category:: | Stainless Steel |
| Steel Grade: | ASTM A890 Gr.4A |
| Material Technical Standards:: | ASTM |
| Specification Code:: | ASTM A890 |
| Place of Origin: | USA |
Description
MATERIAL DATA SHEET - ASTM A890 Grade 4A
MATERIAL CATEGORY - Duplex stainless steel 22Cr-5Ni-3Mo-N
MATERIAL SPECIFICATIONS - ASTM A890
CHEMICAL COMPOSITION (WEIGHT %)
C (％): ≤ 0.030
Si (％): ≤ 1.50
Mn (％): ≤ 1.00
P (％)≤: 0.040
S (％)≤: 0.020
Ni (％): 4.50 ~ 6.50
Cr (％): 21.0 ~ 23.5
Mo (％): 2.50 ~ 3.50
Cu (%): ≤ 1.00
N (%): 0.10 ~ 0.30
MECHANICAL PROPERTIES FINAL HEAT TREATMENT
Condition: solution 1120 Deg. C
Tensile strength, σb/MPa: ≥ 620
Yield strength, σ0.2/MPa: ≥415
Elongation, δ (％): 25.0
Reduction of area, ф (％): -
Hardness | HRB: -
Stainless Steel Rod, Bar, Wire, Cold drawn, ground and polished
Standard length of bars: 2 - 3 meter.
Austenitic Stainless Steel for implants, with high corrosion resistance.
For surgical instruments, fracture fixation devices, screws for implants and many more similar applications.
AVAILABILITY
Black bar / Flat bar / Steel strip / Square bar
Bright - peeled + polishing, centerless grinding
Forged - ring, tube, pipe casing, discs, shaft
PRODUCT DESCRIPTION
The alloy is usually produced by AOD / VOD /VIM 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
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 equipment
Mechanical parts used in the condition of corrosion resistance
Bolt and nut
Pressure vessel
PRODUCT PROFILE & FORMS
Round bar / Wire rod (Diameter): 5.5mm to 450mm
Square bar / Flat bar: 3mm to 1000mm
Plate / Sheet steel / Steel strip: 0.1mm to 1000mm
Width: 8mm to 1000mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers. Email: sales@cnlhss.com
MATERIAL CATEGORY - Duplex stainless steel 22Cr-5Ni-3Mo-N
MATERIAL SPECIFICATIONS - ASTM A890
CHEMICAL COMPOSITION (WEIGHT %)
C (％): ≤ 0.030
Si (％): ≤ 1.50
Mn (％): ≤ 1.00
P (％)≤: 0.040
S (％)≤: 0.020
Ni (％): 4.50 ~ 6.50
Cr (％): 21.0 ~ 23.5
Mo (％): 2.50 ~ 3.50
Cu (%): ≤ 1.00
N (%): 0.10 ~ 0.30
MECHANICAL PROPERTIES FINAL HEAT TREATMENT
Condition: solution 1120 Deg. C
Tensile strength, σb/MPa: ≥ 620
Yield strength, σ0.2/MPa: ≥415
Elongation, δ (％): 25.0
Reduction of area, ф (％): -
Hardness | HRB: -
Stainless Steel Rod, Bar, Wire, Cold drawn, ground and polished
Standard length of bars: 2 - 3 meter.
Austenitic Stainless Steel for implants, with high corrosion resistance.
For surgical instruments, fracture fixation devices, screws for implants and many more similar applications.
AVAILABILITY
Black bar / Flat bar / Steel strip / Square bar
Bright - peeled + polishing, centerless grinding
Forged - ring, tube, pipe casing, discs, shaft
PRODUCT DESCRIPTION
The alloy is usually produced by AOD / VOD /VIM 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
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 equipment
Mechanical parts used in the condition of corrosion resistance
Bolt and nut
Pressure vessel
PRODUCT PROFILE & FORMS
Round bar / Wire rod (Diameter): 5.5mm to 450mm
Square bar / Flat bar: 3mm to 1000mm
Plate / Sheet steel / Steel strip: 0.1mm to 1000mm
Width: 8mm to 1000mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers. Email: sales@cnlhss.com
