HM3
2026-06-09 13:15:35 Origin： Remark：0 Click：
3.0 Chromium - 3.0 Molybdenum - 0.7 Vanadium steel round bar heat treated forgings plate stock available ESR ingot HM3 hot bloomed, rolled, forged, cold drawn rod
TECHNICAL DATA SHEET - Grade HM3
Steel type: 3.0Cr - 3.0Mo - 0.7V - 0.25C base alloy steel
Stock available: round bar, plate, flat bar
PROFILES AND DIMENSIONS
Rod / round bar / disc (diameter): 6.0 ~ 800 mm
Square bar / flat bar: 10 ~ 600 mm
Plate / sheet / strip: T 0.5 ~ 300 X W 15 ~ 1000 X L mm
TYPICAL CHEMICAL COMPOSITIONS (mass fraction - %)
Carbon, C (％): 0.22 ~ 0.32
Silicon, Si (％): ≤ 0.60
Manganese, Mn (％): ≤ 0.35
Phosphorus, P (％): ≤ 0.030
Sulfur, S (％): ≤ 0.030
Chromium, Cr (％): 2.60 ~ 3.20
Molybdenum, Mo (％): 2.70 ~ 3.20
Nickel, Ni (％): -
Copper, Cu (%): -
Vanadium, V (%): 0.60 ~ 0.80
Niobium, Nb (％): 0.08 ~ 0.15
Titanium, Ti (％): -
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: 1060
Heat treatment temperature / ℃ | tempering : 610 x 2h + 580 x 2h
Hardness after annealing, ≤ HB: -
Tensile strength, Rm ≥ MPa: -
Yield strength, Rp0.2 ≥ MPa: -
Elongation, A5 ≥ (%): -
Reduction of area, Z ≥ (%): -
Impact strength, AKv ≥ J: -
Sulfur, S (％): ≤ 0.030
Chromium, Cr (％): 2.60 ~ 3.20
Molybdenum, Mo (％): 2.70 ~ 3.20
Nickel, Ni (％): -
Copper, Cu (%): -
Vanadium, V (%): 0.60 ~ 0.80
Niobium, Nb (％): 0.08 ~ 0.15
Titanium, Ti (％): -
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: 1060
Heat treatment temperature / ℃ | tempering : 610 x 2h + 580 x 2h
Hardness after annealing, ≤ HB: -
Tensile strength, Rm ≥ MPa: -
Yield strength, Rp0.2 ≥ MPa: -
Elongation, A5 ≥ (%): -
Reduction of area, Z ≥ (%): -
Impact strength, AKv ≥ J: -
Hardness after final heat treatment / HRC 51
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.
PRODUCT DESCRIPTION
HM3 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: 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.
If you are interested in our products or services, pleased to EMAIL (sales@ccsteels.com) our qualified production engineers or sales department.
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.
PRODUCT DESCRIPTION
HM3 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: 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.
If you are interested in our products or services, pleased to EMAIL (sales@ccsteels.com) our qualified production engineers or sales department.
JIANGYOU LONGHAI SPECIAL STEEL CO.,LTD
ISO 9001-2015 Certified by UKAS, UICC
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
Hot search：HM3
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