1.4988 Stockist, 1.4988 Equivalent Datasheet
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1.4988
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Specifications 1.4988 datasheet, Chemical 1.4988, DIN 1.4988 properties from steelmaking, hot forging, hot rolling, heat treatment, cold working. We also possess advanced precision machining equipments for further processing.
MATERIAL SPECIFICATIONS - W-Nr 1.4988
MATERIAL CATEGORY - High temperature high strength steel and superalloy 
PRODUCT DESCRIPTION
The alloy is usually produced by AOD/VIM/VOD followed by electroslag refining (ESR) or VAR 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 bright in the solution annealing condition.
Final heat treatment - heat treatment / QT / solution treatment
MATERIAL SPECIFICATIONS - DIN 17742, 17460, 17480, DIN EN 103021, 10296, 10095
AVAILABLE SHAPES
Round bar / flat bar / square bar / valve body / ring / plate / tube  
Bright - peeled + polishing /centerless grinding /peeled + slidabrading
Forged - ring /pipe casing /discs /shaft
CHEMICAL COMPOSITION (WEIGHT %) 
C (%):     0.04 ~ 0.10
Si (%):     0.30 ~ 0.60
Mn (%):   ≤ 1.50
P (%)≤:   0.035
S (%)≤:   0.015
Cr (%):    15.5 ~ 17.5
Ni (%):    12.5 ~ 14.5
Mo (%):   1.10 ~ 1.50
V (%):      0.60 ~ 0.85
Nb + Ta:  10×C% + 0.4 ~ 1.20
Others (%):  N ≈ 0.10,
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot forming temperature /℃:    1150~750
Heat treatment temperature /℃ | annealing:  -    
Heat treatment temperature /℃ | quenching or solution:  1100~ 1150 air/water
Heat treatment temperature /℃ | tempering: 750~800
Heat treatment temperature /℃ | ageing:  -
Condition: precipitation hardening
Mechanical property under room temperature |σb/MPa: 540~740
Mechanical property under room temperature  |σs≥/MPa:  255
Mechanical property under room temperature |δ5≥(%):  30
Mechanical property under room temperature |Akv(DVM):  69   
Heat stability temperature/℃:  650
Non-scale temperature in air /℃:  750
MECHANICAL PROPERTY UNDER HIGH TEMPERATURE
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|200:    196            
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|300:    177       
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|400:    167      
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|500:    157      
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|600:    147  
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|700:    -
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|800:    -
Creep rupture strength /MPa,at following time/h and temperature /℃|1000h|600:    304
Creep rupture strength /MPa,at following time/h and temperature /℃|1000h|700:    147
Creep rupture strength /MPa,at following time/h and temperature /℃|1000h|800:   -
Creep rupture strength /MPa,at following time/h and temperature /℃|1000h|900:    -
Creep rupture strength /MPa,at following time/h and temperature /℃|10000h|600:  250
Creep rupture strength /MPa,at following time/h and temperature /℃|10000h|700:   88
Creep rupture strength /MPa,at following time/h and temperature /℃|10000h|800:    -
Creep rupture strength /MPa,at following time/h and temperature /℃|10000h|900:    -
Creep rupture strength /MPa,at following time/h and temperature /℃|100000h|600:  172
Creep rupture strength /MPa,at following time/h and temperature /℃|100000h|700:   59
Creep rupture strength /MPa,at following time/h and temperature /℃|100000h|800:   -
Creep rupture strength /MPa,at following time/h and temperature /℃|100000h|900:    -
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.
Gas turbine
Turbine blade
Fuel nozzle
Heat treating fixture
Furnace muffle
Nuclear reactor
Turbine engine parts - mechanical gears, gear shaft, main axis, blade
Mechanical parts - bolt and nut, fastener
Heat treatment furnace flask and components, especially in the carbonization.
These materials must stand up to high heat, extreme oxidation potential and recycling.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to email or call our resident team of qualified production engineers. E-mail: sales@ccsteels.com
PRODUCT PROFILE & DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 500mm
Square bar / Flat bar: 3mm to 1000mm
Plate / Sheet steel / Steel strip: 0.1mm to 1000mm
Width: 8mm to 1000mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
Pipes / Tubings: OD30 - 1200mm, with wall thickness ranging from 15 to 350 mm. 

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