Grades | Stainless Steels | Marage 300

UNS Marage 300 ( Precipitation-Hardening )

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Marage 300 Application:Wire, Steel Welding, 18.5Ni - 8.5Co - 5.2Mo - 0.72Ti - 0.10Al, (Marage 300), Vacuum Melted, Environment Controlled Packaging

Chemical composition(mass fraction)(wt.%) of the Marage 300
Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.03
Si - 0.10
Mn - 0.10
Ni - 18.00
Cr - -
Al - 0.10
Cu - -
Ti - 0.40
Fe - -
Mo - 5.00
Co - 8.00

Mechanical properties of grade Marage 300

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition HBW
578 (≥) 947 (≥) 21 23 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical properties of grade Marage 300

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
164 (≥) 619 (≥) 32 13 21 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
- - -
358 715 692 - - -

Marage 300 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