ASTM A387 type 21
2025-10-15 08:39:55 Origin： Remark：0 Click：
ASTM A387 - 17 Specifications for pressure vessel plates, alloy steel, chromium-molybdenum heat treated ASTM A387 type 21 round bar, plate, peeled rod, stock available flat bar,
industrial processing
TECHNICAL DATA SHEET - ASTM A387 type 21
Material category - Specifications for pressure vessel plates,
Material category - Specifications for pressure vessel plates,
Material specifications - ASTM A387 - 2017
Special melting process: EAF + VD / EF + ESR
PRODUCT FORMS & DIMENSIONS
Rod & round bar & disc (diameter): 6.0 ~ 950 mm
Square bar & flat bar: 8 ~ 620 mm
Plate & Sheet: T1.0 ~ 300 X W 20 ~ 1000 X L mm
Rod & round bar & disc (diameter): 6.0 ~ 950 mm
Square bar & flat bar: 8 ~ 620 mm
Plate & Sheet: T1.0 ~ 300 X W 20 ~ 1000 X L mm
TYPICAL CHEMICAL COMPOSITIONS (mass fraction %)
Carbon, C (％): 0.05 ~ 0.15
Manganese, Mn (％): 0.30 ~ 0.60
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％): ≤ 0.025
Carbon, C (％): 0.05 ~ 0.15
Manganese, Mn (％): 0.30 ~ 0.60
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％): ≤ 0.025
Silicon, Si (％): ≤ 0.50
Chromium, Cr (％): 2.75 ~ 3.25Molybdenum, Mo (％): 0.90 ~ 1.10
Nickel, Ni (％): -
Vanadium, V (%): -
Niobium, Nb (％): -
Titanium, Ti (％): -
Aluminum, Al (%): -
Nitrogen, N (%): -
Aluminum, Al (%): -
Nitrogen, N (%): -
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT
Heat treatment temperature / ℃ | annealing: -.
Heat treatment temperature / ℃ | Normalizing: -
Heat treatment temperature / ℃ | Quenching: 860
Heat treatment temperature / ℃ | Tempering : 620
Hardness after annealing, ≤ HB: -
Tensile strength, Rm ≥ MPa: 515 ~ 690
Yield strength, Rp0.2 ≥ MPa: 310
Elongation, A5 ≥ (%): 18.0
Reduction of area, Z ≥ (%): 45.0
Impact strength, AKv ≥ J: -
Hardness after final heat treatment / HB: 128 ~ 180.
Hardness after annealing, ≤ HB: -
Tensile strength, Rm ≥ MPa: 515 ~ 690
Yield strength, Rp0.2 ≥ MPa: 310
Elongation, A5 ≥ (%): 18.0
Reduction of area, Z ≥ (%): 45.0
Impact strength, AKv ≥ J: -
Hardness after final heat treatment / HB: 128 ~ 180.
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.
If you are interested in our products or services, pleased to EMAIL (sales@ccsteels.com) our qualified production engineers or sales department.
Raw Material Stock Available
Custom 450 / GD450 / XM-25 (S45000), 403 ESR, AISI 616 / 422 ESR, B50A365 / 403Cb+
17-4PH / 630, M-152 / 1.4938 / S151D, FV520B / S143 / 1.4594. X22CrMoV12-1
13Х11Н2B2MФ / AE961W, 11Х11Н2B2MФ / 16Х11Н2B2MФ
AISI 615 / S41800, 15-5PH / XM-12 (S15500), A-286 AISI 660 / S66286
10705BU, 10705MBU, 10705AJ, S132, S131, S111, S159, S154
Total list
Monthly rank
- 1732CrMoV13
- 1626NiCrMoV11-5
- 1538NCD4
- 1538NiCrMo4
- 1334CrNiMo6V
- 12AISI/SAE 3415
- 11EN 14B
- 1140NiCr6
- 1126NiCrMoV14-5
- 11EN25 / EN 25