ASTM A579 Gr.61
2016-04-14 09:27:23 Origin： Remark：0 Click：
ASTM A579 Technical specification Martensitic Steel ASTM A579 Grade 61 Round bar, Flat bar, Forgings, ESR melted, Hot forging, Hot rolling.
TECHNICAL DATA SHEET - ASTM A579 Gr.61
MATERIAL CATEGORY: Ultra high strength 1380Mpa steel
MATERIAL DELIVERY CONDITION: solution and aged heat treatment
MAIN FEATURES: A579 series steel is produced by the consumable electrode vacuum arc remelting process to provide optimum cleanliness and preferred ingot structure, which in turn provide optimum transverse mechanical properties.
Stock Available: Round bar diam. 5.5 ~ 300mm.
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): ≤ 0.07
Silicon, Si (％): ≤ 1.00
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 15.5 ~ 17.5
Nickel, Ni (%): 3.00 ~ 5.00
Molybdenum, Mo (％): -
Copper, Cu (%): 3.00 ~ 5.00
Niobium, Nb (%): 0.15 ~ 0.45
Aluminium, Al (%): -
Nitrogen, N (%): -
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Mechanical properties under single melting
Tensile strength σb≥ MPa: 1140
Yield strength σs≥ MPa: 965
Elongation δ5 ≥(%): 12.0
Reduction of area ф ≥ (％): 50
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Mechanical properties under single melting
Tensile strength σb≥ MPa: 1140
Yield strength σs≥ MPa: 965
Elongation δ5 ≥(%): 12.0
Reduction of area ф ≥ (％): 50
Tensile strength σb≥ MPa: 1240
Yield strength σs≥ MPa: 1100
Elongation δ5 ≥(%): 10.0
Reduction of area ф ≥ (％): 45
Yield strength σs≥ MPa: 1100
Elongation δ5 ≥(%): 10.0
Reduction of area ф ≥ (％): 45
Tensile strength σb≥ MPa: 1380
Yield strength σs≥ MPa: 1240
Elongation δ5 ≥(%): 8.0
Reduction of area ф ≥ (％): 40
Yield strength σs≥ MPa: 1240
Elongation δ5 ≥(%): 8.0
Reduction of area ф ≥ (％): 40
MAIN FEATURES AND MELTING PROCESS
The steels shall be manufactured by melting process or VIM + ESR Melted and shall be finished by hot-worked forging. 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.
Heat and product analyses shall be employed to assess the conformance of steels with required chemical compositions. Forgings shall examined by tension and Charpy impact tests and conform to required mechanical properties such as yield strength, tensile strength, elongation, reduction of area, minimum room-temperature Charpy V-notch energy absorption, maximum annealed hardness, and section size capability. Nondestructive tests, such as magnetic particle, liquid penetrant, and ultrasonic inspection procedures, shall also be performed.
TYPICAL APPLICATIONS
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rod.
Multidiameter shaft, Pressure vessel.
PRODUCT PROFILE AND DIMENSION
Round bar & Disc (diameter): 5.5mm to 800mm
Square bar / Flat bar: 10mm to 800mm
Length: random length, fixed length or based on the customer's special requirement.
Steel strip: T0.20 ~ 3mm X W10 ~ 2000mm X Coil
Heavy/middle plate via hot rolled: T4 - 200mm X W1000- 2500mm X L1000-12000mm
Forging piece: stepped shaft, and other different shapes based on OEM.
The steels shall be manufactured by melting process or VIM + ESR Melted and shall be finished by hot-worked forging. 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.
Heat and product analyses shall be employed to assess the conformance of steels with required chemical compositions. Forgings shall examined by tension and Charpy impact tests and conform to required mechanical properties such as yield strength, tensile strength, elongation, reduction of area, minimum room-temperature Charpy V-notch energy absorption, maximum annealed hardness, and section size capability. Nondestructive tests, such as magnetic particle, liquid penetrant, and ultrasonic inspection procedures, shall also be performed.
TYPICAL APPLICATIONS
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rod.
Multidiameter shaft, Pressure vessel.
PRODUCT PROFILE AND DIMENSION
Round bar & Disc (diameter): 5.5mm to 800mm
Square bar / Flat bar: 10mm to 800mm
Length: random length, fixed length or based on the customer's special requirement.
Steel strip: T0.20 ~ 3mm X W10 ~ 2000mm X Coil
Heavy/middle plate via hot rolled: T4 - 200mm X W1000- 2500mm X L1000-12000mm
Forging piece: stepped shaft, and other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
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