SAE B 299 MD

Grades | Stainless Steels | B 299 MD

SAE B 299 MD ( Precipitation-Hardening )

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B 299 MD Application:Titanium Sponge

Chemical composition(mass fraction)(wt.%) of the B 299 MD
Elements Min.（≥） Max.（≤） Similar Remarks
C 0.08 0.15
Si - 0.75
Mn 1.00 2.00
P - -
S - 0.03
Ni 8.50 10.50
Cr 27.00 31.00
Al - -
Cu - 0.50
Ti - -
Fe - -
N - -
Mo - 0.50

Mechanical properties of grade B 299 MD

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
436 (≥) 641 (≥) 43 43 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical properties of grade B 299 MD

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
552 (≥) 139 (≥) 11 14 24 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		 - - -
769 695 537 - - -

B 299 MD 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