Location » Home » Grades > Stainless Steels & Special Steels > Nonmagnetizable Steel X55MnCr18-5 / 18Mn-4Cr

ASTM Nonmagnetizable Steel X55MnCr18-5 / 18Mn-4Cr Details

X55MnCr18-5 X55MnCr18-4 18Mn-4Cr

Nonmagnetizable Steel X55MnCr18-5 / 18Mn-4Cr Application:Nonmagnetizable Steel
Category Type Grade Designations
Grades Stainless Steels & Special Steels Nonmagnetizable Steel X55MnCr18-5 / 18Mn-4Cr USA - ASTM , ASTM STP 903 - Nonmagnetizable Steel
Chemical composition(mass fraction)(wt.%)
Elements Min.(≥) Max.(≤)
C - 0.55
Mn - 18
Cr - 4.5
Mechanical properties of grade Nonmagnetizable Steel X55MnCr18-5 / 18Mn-4Cr
Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
536 (≥) 611 (≥) 31 13 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 243
Physical properties of grade Nonmagnetizable Steel X55MnCr18-5 / 18Mn-4Cr
Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
557 (≥) 966 (≥) 34 42 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 424
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
748 463 493
Nonmagnetizable Steel X55MnCr18-5 / 18Mn-4Cr Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
Nonmagnetizable Steel X55MnCr18-5 / 18Mn-4Cr ASTM USA
Nonmagnetizable Steel

Enquiry