S21900
2014-09-19 10:44:59 Origin： Remark：0 Click：
S21900 Austenitic steel of 20Cr-6Ni-9Mn, S21900 ESR & VAR technique, Blooming, Hot forging, Hot rolling, Heat treatment, Straightening, 100% Ultrasonic flaw detection test.
MATERIAL DATA SHEET - Grade S21900
MATERIAL CATEGORY - 20Cr-6Ni-9Mn Austenitic steel
PRODUCT DESCRIPTION
The alloy is usually produced by BEF + AOD / VD / 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 softened condition.
Final heat treatment - solution treatment / QT
MATERIAL SPECIFICATIONS - ASTM A959 (2004), A276, A312, A632, A176, A580
AVAILABILITY
Round bar / flat bar / steel strip / square bar / forgings / plate
Bright - peeled + polishing, centerless grinding
Forged - ring, tube, pipe casing, discs, shaft
PROFILE AND DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 500mm
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.
CHEMICAL COMPOSITION (WEIGHT %)
C (％): ≤ 0.08
Si (％): ≤ 1.00
Mn (％): 8.00 ~ 10.0
P (％)≤: 0.060
S (％)≤: 0.030
Cr (％): 19.0 ~ 21.0
Ni (％): 5.50 ~ 7.50
Mo (％): -
N (％): 0.15 ~ 0.40
Si (％): ≤ 1.00
Mn (％): 8.00 ~ 10.0
P (％)≤: 0.060
S (％)≤: 0.030
Cr (％): 19.0 ~ 21.0
Ni (％): 5.50 ~ 7.50
Mo (％): -
N (％): 0.15 ~ 0.40
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Form: Plate,sheet, strip
Tensile strength, TS σb/MPa: 655
Yield strength, YS σ0.2/MPa: 330
Elongation, EL δ (％): 30
Reduction of area, RA ф(％): -
Elongation, EL δ (％): 30
Reduction of area, RA ф(％): -
Hardness (HBW): -
Cold bending property: N
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 us or call our resident team of qualified production engineers, Email: sales@ccsteels.com
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