18X3MB
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Specifications TOCT 20072 - 1994 type 18X3MB ESR melted, Blooming, 18X3MB Round bar, Plate, forgings, Hot rolling, Heat treatment TOCT 20072 - 1994.
TECHNICAL DATA SHEET - TOCT 20072 type 18X3MB
TECHNICAL SPECIFICATION: TOCT 20072 - 1994
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: High temperature structural steel
CHEMICAL COMPOSITIONS (mass weights %)
Carbon, C (％): 0.15 ~ 0.20
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.25 ~ 0.50
Phosphorus, P (％) ≤: 0.030
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 2.50 ~ 3.00
Molybdenum, Mo (%): 0.50 ~ 0.70
Vanadium, V (％): 0.05 ~ 0.15
Vanadium, V (％): 0.05 ~ 0.15
Tungsten, W (％): 0.50 ~ 0.80
Titanium, Ti (％): ≤ 0.03
Nickel, Ni (％): ≤ 0.30
Copper, Cu (％): ≤ 0.20
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Annealed hardness | HBS: 170 ~ 220
Tensile strength, σb ≥ MPa: 550 ~ 740
Copper, Cu (％): ≤ 0.20
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Annealed hardness | HBS: 170 ~ 220
Tensile strength, σb ≥ MPa: 550 ~ 740
Yield strength, σ0.2 ≥ MPa: 390
Elongation, δ5 ≥ (％): 17.0
Reduction of area, ф ≥ (％): -
MANUFACTURING TECHNIQUE
Reduction of area, ф ≥ (％): -
MANUFACTURING TECHNIQUE
The alloy is usually produced by IFF, LF, EAF + VD + LF followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied brightly in the annealed condition.
PROCESSING PROPERTY
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
Mechanical gears, gear shaft, main axis, valve rod.
Mechanical parts - connecting rod, bolt and nut.
Multidiameter shaft.
PRODUCT FORMS AVAILABLE
Rod / round bar / disc (diameter): 5.5mm to 800mm
Square bar / Flat bar: 3mm to 500mm
Sheet steel via cold rolled: T0.5 - 3.0mm X W600- 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts, and other different shapes based on OEM.
Rod / round bar / disc (diameter): 5.5mm to 800mm
Square bar / Flat bar: 3mm to 500mm
Sheet steel via cold rolled: T0.5 - 3.0mm X W600- 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts, and other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
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