ASTM A437 type B4C
2025-09-05 13:04:00 Origin： Remark：0 Click：
ASTM A437 type B4C Martensitic Stainless Steel 12Cr-1Mo-1W alloy Round bar, B4C high temperature components for gas turbine Material specifications
TECHNICAL DATA SHEET - ASTM A437-12 Grade B4C
TYPE OF STEEL: Martensitic stainless steel
On-hand Stock - diameter 20 ~ 280mm
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
Technical standards: ASTM A437 - 2012
TYPICAL CHEMICAL COMPOSITIONS (mass weight %)
Carbon, C (％): 0.20 ~ 0.25
Silicon, Si (％): 0.20 ~ 0.50
Manganese, Mn (％): 0.50 ~ 1.00
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.015
Chromium, Cr (％): 11.0 ~ 12.5
Nickel, Ni (％): 0.50 ~ 1.00
Molybdenum, Mo (%): 0.90 ~ 1.25
Tungsten, W (%): 0.90 ~ 1.25
Vanadium, V (%): 0.20 ~ 0.30
Aluminum, Al (%): ≤ 0.05
Titanium, Ti (%): ≤ 0.05
Tin (%): ≤ 0.04
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Condition: Quenched 1025 ~ 1050℃, oil cooled
Tempered 620℃ min., air cooled
Annealed hardness: 248 max.
Tensile strength, σb ≥ MPa: 790
Yield strength, σ0.2 ≥ MPa: 585
Elongation, δ5 ≥ (％): 18.0
QT hardness: HB277 max.
Impact strenvgth, /J: 34 min.
Condition: Quenched 1025 ~ 1050℃, oil cooled
Tempered 620℃ min., air cooled
Annealed hardness: 248 max.
Tensile strength, σb ≥ MPa: 790
Yield strength, σ0.2 ≥ MPa: 585
Elongation, δ5 ≥ (％): 18.0
QT hardness: HB277 max.
Impact strenvgth, /J: 34 min.
PRODUCT DESCRIPTION
The alloy is usually produced by EAF+LF+AOD / VOD /VIM 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 annealed condition.
Final heat treatment - quenched and tempered
PRODUCT PROFILE
Round bar (diameter): 6.0 to 800mm
Square bar / flat bar: 8 to 600mm
Sheet steel via cold rolled: T 0.5 - 3.0 X W 60 - 1000 X L1000 - 2000mm
Steel strip via cold rolled: T 0.4 - 3 X W10 - 200 X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
Round bar (diameter): 6.0 to 800mm
Square bar / flat bar: 8 to 600mm
Sheet steel via cold rolled: T 0.5 - 3.0 X W 60 - 1000 X L1000 - 2000mm
Steel strip via cold rolled: T 0.4 - 3 X W10 - 200 X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
ADVANTAGED STOCK
High alloy and superalloy for turbine blade
ASTM A565 Grade 616/422/S42200, Grade 615/S41800, XM-32/S64152
17-4PH/630/1.4542, 631, 851, 961, WB36, D6-AC, D6A.
1.4980, 1.4922, 1.4923, 1.4935, 1.4938, 1.4913
Forms: Bars, Forge piece, Ring, Strip
Non-magnetic alloy
X40MnCrN19/1.3813, X8CrMnN18-18/1.3816, X40MnCr18/1.3817, N1310
Forms: Bars, Forge piece, Ring, Strip
High alloy and superalloy for turbine blade
ASTM A565 Grade 616/422/S42200, Grade 615/S41800, XM-32/S64152
17-4PH/630/1.4542, 631, 851, 961, WB36, D6-AC, D6A.
1.4980, 1.4922, 1.4923, 1.4935, 1.4938, 1.4913
Forms: Bars, Forge piece, Ring, Strip
Non-magnetic alloy
X40MnCrN19/1.3813, X8CrMnN18-18/1.3816, X40MnCr18/1.3817, N1310
Forms: Bars, Forge piece, Ring, Strip
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com
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