AISI 8720
2024-10-15 09:27:00 Origin： Remark：0 Click：
SAE J1249 Technical specification Alloy Structural steel AISI 8720 Round bar, Flat bar, Plate, ESR ingot, blooming, Hot forging / rolling,Heat treatment
TECHNICAL DATA SHEET - AISI 8720
MATERIAL CATEGORY: SAE, AISI, UNS system alloy structural steel
MATERIAL SPECIFICATIONS: SAE J1249 -2000
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
CHEMICAL COMPOSITIONS (mass weight - %)
Carbon, C (％): 0.18 ~ 0.23
CHEMICAL COMPOSITIONS (mass weight - %)
Carbon, C (％): 0.18 ~ 0.23
Silicon, Si (%): 0.15 ~ 0.35
Manganese, Mn (％): 0.70 ~ 0.90
Manganese, Mn (％): 0.70 ~ 0.90
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.040
Chromium, Cr (%): 0.40 ~ 0.60
Nickel, Ni (%): 0.40 ~ 0.70
Molybdenum, Mo (%): 0.20 ~ 0.30
MECHANICAL PROPERTIES AND HOT WORKING
Bar size: 30mm
Mechanical property ≥ σb / MPa: 780~1080
Mechanical property ≥ σs / MPa: 590
Mechanical property ≥ δ5 (%): 10
Mechanical property ≥ σs / MPa: 590
Mechanical property ≥ δ5 (%): 10
Mechanical property ≥ ψ (％): 40
Hardness /annealed COND: -
Hot working temperature /℃: 1150～850
MAIN FEATURES AND MELTING PROCESS
The steels shall be manufactured by melting process EF, LF + EAF+ VD, IFF + ESR Melted. VIM + ESR can be handled by agreement. Forgings may be furnished in one of the following conditions: stress relieving; annealing; solution treatment; solution treatment and ageing; normalizing; normalizing and tempering; or quenching and tempering.
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.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners.
Mechanical gears, gear shaft, main axis, valve rods.
Mechanical parts - connecting rods, bolts and nuts.
Multidiameter shafts.
PRODUCT PROFILE AND SUPPLYING FORMS
Round bar /rod / disc (diameter): 5.50mm to 800mm
Square bar / Flat bar: 6mm to 800mm
Steel strip: T0.20 ~ 3mm X W10 ~ 200mm X Coil
Heavy/middle plate via hot rolled: T4 - 200mm X W10 - 1200mm X Lmm
Forging piece: stepped shafts, other different shapes based on OEM requirement.
The steels shall be manufactured by melting process EF, LF + EAF+ VD, IFF + ESR Melted. VIM + ESR can be handled by agreement. Forgings may be furnished in one of the following conditions: stress relieving; annealing; solution treatment; solution treatment and ageing; normalizing; normalizing and tempering; or quenching and tempering.
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.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners.
Mechanical gears, gear shaft, main axis, valve rods.
Mechanical parts - connecting rods, bolts and nuts.
Multidiameter shafts.
PRODUCT PROFILE AND SUPPLYING FORMS
Round bar /rod / disc (diameter): 5.50mm to 800mm
Square bar / Flat bar: 6mm to 800mm
Steel strip: T0.20 ~ 3mm X W10 ~ 200mm X Coil
Heavy/middle plate via hot rolled: T4 - 200mm X W10 - 1200mm X Lmm
Forging piece: stepped shafts, other different shapes based on OEM requirement.
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
- Email us: lh.steel@hotmail.com
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
- Email us: lh.steel@hotmail.com
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