AISI 688
2016-07-29 11:29:58 Origin： Remark：0 Click：
Specifications AISI 688 datasheet, AISI 688 Chemical, AISI 688 Properties from Steel making, ESR melted, Blooming, Forging, rolling, Heat treatment, Straightening, Ultrasonic test, Cold working or Machined. All of these materials conform to Military standard, nuclear power. We also possess the advanced precision machining equipments for further processing. Please just let us know what you inquire.
TECHNICAL DATA SHEET - AISI 688
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY - Nickel base superalloy
CHEMICAL COMPOSITION (WEIGHT %)
C (％): ≤ 0.08
Si (％): ≤ 0.50
Mn (％): ≤ 1.00
P (％)≤: 0.025
S (％)≤: 0.010
Cr (％): 14.0 ~ 17.0
Ni (％): 70.0 min.
Mo (％): -
Si (％): ≤ 0.50
Mn (％): ≤ 1.00
P (％)≤: 0.025
S (％)≤: 0.010
Cr (％): 14.0 ~ 17.0
Ni (％): 70.0 min.
Mo (％): -
Co (%): ≤ 1.00
W (%): -
Al (%): 0.40 ~ 1.00
Cu (%): ≤ 0.50
Ti (%): 2.25 ~ 2.75
Nb (%): 0.70 ~ 1.20
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Tensile strength, σb/≥ MPa: 1120 / 1250
Yield strength, σ0.2/≥ MPa: 760 / 850
Elongation, δ ≥(％): 30 / 22
Elongation, δ ≥(％): 30 / 22
Reduction of area, ф ≥ (％): -
Hardness | HB: 326
TYPICAL APPLICATIONS
Superalloy is widely used to produce the high temperature components for gas turbine in the field of aviation, naval vessels and industry, such as turbine blade, guide blade, turbine disc, high pressure compressor disc, combustor, and also production of energy conversion devices, such as aerospace craft, rocket motor, nuclear reactor, petrochemical equipments, coaly transforming and so on.
Heat treating fixture
Furnace muffle
Nuclear reactor
Furnace muffle
Nuclear reactor
Turbine engine parts - mechanical gears, gear shaft, main axis, blade
Mechanical parts - bolt and nut, fastener
Gas turbine
Turbine blade
Fuel nozzle
Turbine blade
Fuel nozzle
Heat treatment furnace flask and components, especially in the carbonization.
These materials must stand up to high heat, extreme oxidation potential and recycling.
These materials must stand up to high heat, extreme oxidation potential and recycling.
PRODUCT DESCRIPTION
The alloy is usually produced by AOD / VOD /VIM followed by electroslag refining (ESR) / VAR if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied bright surface in the solution annealed condition.
Final heat treatment - solution treated + Aged
The alloy is usually produced by AOD / VOD /VIM followed by electroslag refining (ESR) / VAR if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied bright surface in the solution annealed condition.
Final heat treatment - solution treated + Aged
FORMS AND SHAPES
Round bar (Diameter): 5.5mm to 450mm
Square bar / Flat bar: 3mm to 500mm
Heavy/middle plate via hot rolled: T10 - 400mm X W50 - 610mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6mm X W100 - 600mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
Square bar / Flat bar: 3mm to 500mm
Heavy/middle plate via hot rolled: T10 - 400mm X W50 - 610mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6mm X W100 - 600mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
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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