18Cr-18Mn
2025-09-28 09:28:00 Origin： Remark：0 Click：
ASTM A289 Austenitic Nonmagnetic steel 18Cr-18Mn forged round bar, flat bar, ring, ESR technique, hot forged, solution heat treated, cold expanded
TECHNICAL DATA SHEET: ASTM A289 type 18Mn-18Cr
MATERIAL CATEGORY: 18Mn-18Cr Austenitic steel, nonmagnetic alloy
PRODUCT DESCRIPTION
The alloy is usually produced by AOD / EAF 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 treated / QT + cold expanded
MATERIAL SPECIFICATIONS - ASTM A289 / A289M
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (%): 0.10 max
Manganese, Mn (%): 17.5 ~ 20.0
Phosphorus, P (%): 0.060 max
Sulfur, S (%): 0.015 max
Silicon, Si (%): 0.80 max
Nickel, Ni (%): 2.00 max
Chromium, Cr (%): 17.5 ~ 20.0
Nitrogen, N (%): 0.45 ~ 0.80
Titanium, Ti (%): 0.10 max
Aluminum, Al (%): 0.04 max
Vanadium, V (%): 0.25 max
Manganese, Mn (%): 17.5 ~ 20.0
Phosphorus, P (%): 0.060 max
Sulfur, S (%): 0.015 max
Silicon, Si (%): 0.80 max
Nickel, Ni (%): 2.00 max
Chromium, Cr (%): 17.5 ~ 20.0
Nitrogen, N (%): 0.45 ~ 0.80
Titanium, Ti (%): 0.10 max
Aluminum, Al (%): 0.04 max
Vanadium, V (%): 0.25 max
Features - 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 Requirement
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, 47
PRODUCT PROFILE & DIMENSIONS
Round bar (diameter): 6.0 to 400mm
Square bar / flat bar: 10 to 550mm
Forging tubing: OD50 - 1200 mm, with wall thickness ranging from 10 to 235 mm.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL us or call our resident team of qualified production engineers, E-mail: sales@ccsteels.com
Hot search：18Cr-18Mn
