18Mn18Cr
2014-09-19 11:27:35 Origin： Remark：0 Click：
※ASTM A289 18Mn-18Cr/ 18Mn18Cr / 18Cr-18Mn - DATA SHEET※※ MATERIAL CATEGORY: 18Mn-18Cr Austenitic steel※PRODUCT ...
ASTM A289 18Mn-18Cr / 18Mn18Cr / 18Cr-18Mn - DATA SHEET
MATERIAL CATEGORY: 18Mn-18Cr Austenitic steel
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 softened condition.
Final heat treatment - solution treatment / QT
CHEMICAL COMPOSITION (WEIGHT %) - ASTM A289M 18Mn-18Cr
Carbon (%): 0.10 max
Manganese(%): 17.5 ~ 20.0
Phosphorus(%): 0.060 max
Sulfur(%): 0.015 max
Silicon(%): 0.80 max
Nickel(%): 2.00 max
Chromium(%): 17.5 ~ 20.0
Nitrogen(%): 0.40 ~ 0.80
Titanium(%): 0.10 max
Aluminum(%): 0.04 max
Vanadium(%): 0.25 max
Manganese(%): 17.5 ~ 20.0
Phosphorus(%): 0.060 max
Sulfur(%): 0.015 max
Silicon(%): 0.80 max
Nickel(%): 2.00 max
Chromium(%): 17.5 ~ 20.0
Nitrogen(%): 0.40 ~ 0.80
Titanium(%): 0.10 max
Aluminum(%): 0.04 max
Vanadium(%): 0.25 max
Technical Specification: - ASTM A289/A289M 18Mn-18Cr
Non-magnetic stainless steel reduces the losses in the ring that are caused by eddy currents and thermal stresses. The ring is cold formed to provide the highest yield strength and to ensure plastic deformation does not occur during operation.
Mechanical properties - Room Temperature Mechanical Property Requirements
Grade 1
Tensile Strength,min,MPa | 1000
0.2% Yield Strength,min,MPa | 930
Elongation in 50 mm,min, | % : 28.0
Reduction of Area, min, % : 60.0
Charpy V-Notch energy: 95
Grade 2
Tensile Strength,min,MPa | 1070
0.2% Yield Strength,min,MPa | 1000
Elongation in 50 mm,min, | %: 25.0
Reduction of Area, min, % : 55.0
Charpy V-Notch energy, 88
Grade 3
Tensile Strength,min,MPa | 1140
0.2% Yield Strength,min,MPa | 1105
Elongation in 50 mm,min, | %: 20.0
Reduction of Area, min, % : 50.0
Charpy V-Notch energy, 81
Grade 4
Tensile Strength,min,MPa | 1170
0.2% Yield Strength,min,MPa | 1140
Elongation in 50 mm,min, | %: 19.0
Reduction of Area, min, % : 48.0
Charpy V-Notch energy, 79
Grade 5
Tensile Strength,min,MPa | 1205
0.2% Yield Strength,min,MPa | 1170
Elongation in 50 mm,min, | %: 17.0
Reduction of Area, min, % : 45.0
Charpy V-Notch energy, 75
Grade 6
Tensile Strength,min,MPa | 1275
0.2% Yield Strength,min,MPa | 1240
Elongation in 50 mm,min, | %: 14.0
Reduction of Area, min, % : 40.0
Charpy V-Notch energy, 68
Grade 7
Tensile Strength,min,MPa | 1345
0.2% Yield Strength,min,MPa | 1310
Elongation in 50 mm,min, | %: 12.0
Reduction of Area, min, % : 35.0
Charpy V-Notch energy, 54
Grade 8
Tensile Strength,min,MPa | 1380
0.2% Yield Strength,min,MPa | 1345
Elongation in 50 mm,min, | %: 10.0
Reduction of Area, min, % : 30.0
Charpy V-Notch energy, 4
TYPICAL APPLICATIONS
Chemical equipments
Mechanical parts used in the condition of corrosion resistance
Generator ring
Pressure vessel
PRODUCT PROFILE
Round bar: Diameter 8mm to 550mm
Square bar / Flat bar: 10mm to 550mm
Plate / Sheet steel / Steel strip: 10mm to 500mm
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