20MnMoNb
2025-12-15 08:44:38 Origin： Remark：0 Click：
NB/T 47008 - 2017 carbon and alloy steel forgings for pressure equipments 20MnMoNb heat treated round bar, plate, peeled rod 20MnMoNb stock available flat bar, industrial processing
TECHNICAL DATA SHEET - GB 20MnMoNb
Material category - alloy structure steel bars for pressure equipment.
Material category - alloy structure steel bars for pressure equipment.
Material specifications - NB/T 47008 - 2017
PRODUCT FORMS & DIMENSIONS
Rod & round bar & disc (diameter): 6.0 ~ 880 mm
Square bar & flat bar: 8 ~ 650 mm
Plate & Sheet: T 8.0 ~ 210 X W 20 ~ 1000 X L mm
Rod & round bar & disc (diameter): 6.0 ~ 880 mm
Square bar & flat bar: 8 ~ 650 mm
Plate & Sheet: T 8.0 ~ 210 X W 20 ~ 1000 X L mm
TYPICAL CHEMICAL COMPOSITIONS (mass fraction %)
Carbon, C (％): 0.17 ~ 0.23
Silicon, Si (％): 0.15 ~ 0.40
Manganese, Mn (％): 1.30 ~ 1.60
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％): ≤ 0.010
Chromium, Cr (％): ≤ 0.30
Molybdenum, Mo (％): 0.45 ~ 0.65
Nickel, Ni (％): ≤ 0.30
Carbon, C (％): 0.17 ~ 0.23
Silicon, Si (％): 0.15 ~ 0.40
Manganese, Mn (％): 1.30 ~ 1.60
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％): ≤ 0.010
Chromium, Cr (％): ≤ 0.30
Molybdenum, Mo (％): 0.45 ~ 0.65
Nickel, Ni (％): ≤ 0.30
Copper, Cu (%): ≤ 0.20
Vanadium, V (%): -
Niobium, Nb (％): 0.025 ~ 0.050
Titanium, Ti (％): -
Aluminum, Al (%):
Nitrogen, N (%): -
Aluminum, Al (%):
Nitrogen, N (%): -
Ferrum, Fe (%): balance.
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT
Heat treatment temperature / ℃ | annealing: -.
Heat treatment temperature / ℃ | normalizing:
Heat treatment temperature / ℃ | quenching: -
Heat treatment temperature / ℃ | annealing: -.
Heat treatment temperature / ℃ | normalizing:
Heat treatment temperature / ℃ | quenching: -
Heat treatment temperature / ℃ | tempering : 630
Hardness after annealing, ≤ HB: -
Tensile strength, Rm ≥ MPa: 620 ~ 790
Yield strength, Rp0.2 ≥ MPa: 470
Elongation, A5 ≥ (%): 16.0
Reduction of area, Z ≥ (%): -
Impact strength, AKv ≥ J: 47
Hardness after final heat treatment / HB: -
Hardness after annealing, ≤ HB: -
Tensile strength, Rm ≥ MPa: 620 ~ 790
Yield strength, Rp0.2 ≥ MPa: 470
Elongation, A5 ≥ (%): 16.0
Reduction of area, Z ≥ (%): -
Impact strength, AKv ≥ J: 47
Hardness after final heat treatment / HB: -
TYPICAL APPLICATIONS
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 parts - connecting rod, bolt and nuts.
Multi-diameter shaft, pressure vessel parts.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, mechanical gears, gear shaft, main axis, valve rod.
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 parts - connecting rod, bolt and nuts.
Multi-diameter shaft, pressure vessel parts.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, mechanical gears, gear shaft, main axis, valve rod.
PRODUCT DESCRIPTION
16Mn is usually produced by EAF + VD + LF / BEF 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 black in the annealed condition.
Final heat treatment - normalized + tempered
16Mn is usually produced by EAF + VD + LF / BEF 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 black in the annealed condition.
Final heat treatment - normalized + tempered
quenched + tempered.
TECHNICAL SALES ASSISTANCE & SERVICE
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
If you are interested in our products or services, pleased to EMAIL (sales@ccsteels.com) our qualified production engineers or sales department.
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