403CB+, H46 grade stainless steel is an AOD + ESR melted alloy with additional alloying elements giving it good strength and temper resistance at higher temperatures up to 1200oF. Similar to the 410 stainless this grade has the ability to be heat treated to multiple different strength levels. Because of the temper resistance this alloy is soley used in the power generation market as steam and gas turbine blades.
General Electric Material B50A365 identifies a Chromium-Niobium alloy steel used for compressor blading, turbine blading, and forgings.
This specification contains the following classes:B50A365A, B50A365A1, B50A365B, B50A365, B1B50A365C, Electric furnace material, heat treated for final properties Electric furnace material, annealedConsumable - Electrode remelt material, heat treated for final propertiesConsumable - Electrode remelt material, annealed Forgings for Non-bucket applications - Consumable Electrode remelt material, heat treated for final properties.
Material shall be heated to a temperature of 2000-2050°F (1095-1135°C) and held at temperature for sufficient time to assure uniform temperature within the load and each part thereof. The material shall then be quenched in oil or rapidly moving air, as approved in the manufacturing process plan，to a temperature below the Mf martensite finish temperature, to assure complete transformation. Material made to Classes A and C and material that is made to Class B without straightening or cold finishing shall then be uniformly heated to a minimum tempering temperature of 1185°F (640°C), and held for the time necessary to achieve all of the required properties.
ASTM 403CB+, H46, B50A365, S40300, B50A365B,403 Details
ASTM 403CB+, H46, B50A365, S40300, B50A365B,403 Standard Download
|Grades||Stainless Steels - Special Steels||403CB+, H46, B50A365, S40300, B50A365B,403||Martensite||USA - ASTM , GE Approval to B50A365 - STAINLESS STEEL BAR & FORGINGS (CHROMIUM-NIOBIUM-IRON ALLOY, 403 Cb+)
ASTM A276 - Standard Specif i cation for Stainless Steel Bars and Shapes
|Elongation at fracture
|Reduction in cross section on fracture
|As-Heat-Treated Condition||Brinell hardness (HBW)|
|948 (≥)||424 (≥)||43||44||11||Solution and Aging, Annealing, Ausaging, Q+T,etc||113|
J / kgK
|Modulus of elasticity
|717 (≥)||361 (≥)||44||22||11||Solution and Aging, Annealing, Ausaging, Q+T,etc||244|
|Creep strain limit
|Creep rupture strength
|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|
|403CB+, H46, B50A365, S40300, B50A365B,403||ASTM||USA||
STAINLESS STEEL BAR & FORGINGS,CHROMIUM-NIOBIUM-IRON ALLOY