18Mn18Cr
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ASTM A289 specifications 18Mn18Cr datasheet cold drawn rod, peeled round bar forging Ex-stock & Plate heat treated, machined, nuts and bolts processing
TECHNICAL DATA SHEET: ASTM A289 & 18Mn18Cr & 18Cr-18Mn
Technical standards: ASTM A289/A289M
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.
TECHNICAL SPECIFICATIONS: ASTM A289 / A289M
CHEMICAL COMPOSITIONS (mass fraction %)
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 (%): 0.45 ~ 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 (%): 0.45 ~ 0.80
Titanium (%): 0.10 max
Aluminum (%): 0.04 max
Vanadium (%): 0.25 max
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Grade 1
Tensile Strength, min. MPa | 1000
0.2% Yield Strength, min. MPa | 930
Elongation, min A5 | % : 28.0
Reduction of Area, min, Z % : 60.0
Charpy V-Notch energy: 95
Grade 2
Tensile Strength, min. MPa | 1070
0.2% Yield Strength, min. MPa | 1000
Elongation, min 5A | %: 25.0
Reduction of Area, min. Z % : 55.0
Charpy V-Notch energy, 88
Grade 3
Tensile Strength, min. MPa | 1140
0.2% Yield Strength, min. MPa | 1105
Elongation, min. 5A | %: 20.0
Reduction of area, min. Z % : 50.0
Charpy V-Notch energy, 81
Grade 4
Tensile Strength, min. MPa | 1170
0.2% Yield Strength, min. MPa | 1140
Elongation, min, 5A | %: 19.0
Reduction of area, min, Z % : 48.0
Charpy V-Notch energy, 79
Grade 5
Tensile Strength, min. MPa | 1205
0.2% Yield Strength, min. MPa | 1170
Elongation, min. 5A | %: 17.0
Reduction of area, min. Z % : 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, min, 5A | %: 12.0
Reduction of area, min. Z % : 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, A | %: 10.0
Reduction of area, min. Z % : 30.0
Charpy V-Notch energy, 47
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