1.4939 Stockist, 1.4939 Equivalent Datasheet
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1.4939
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AMS 1.4939 is High temperature high strength Martensitic Stainless steel, it is used to produce the high temperature components for gas turbine in the field of aviation. ESR Remelting technique, Hot forging, Hot rolling, Heat treatment.

 


TECHNICAL SPECIFICATIONS - Grade AMS 1.4939
 
MATERIAL CATEGORY - High temperature, high tensile steel & superalloy
 
PRODUCT DESCRIPTION
The alloy is usually produced by AOD/ VIM / EAF 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 bright in the solution annealing condition.
Final heat treatment - heat treatment / QT / solution treatment
 
MATERIAL SPECIFICATIONS - DIN 17742, 17460, 17480, DIN EN 10302, 10296, 10095
 
AVAILABLE SHAPES  
Round bar / flat bar / square bar / forge piece / ring / strip
Bright - peeled + polishing / centerless grinding / peeled + slidabrading
Forged - ring / discs / shaft / Tubing
 
MAIN CHEMICAL COMPOSITION (mass weight %)
C (%):     0.08 ~ 0.15
Si (%):    ≤ 0.50
Mn (%):   0.40~0.90
P (%)≤:   0.025
S (%)≤:   0.015
Cr (%):    11.0~12.5
Ni (%):    2.00~3.00
Mo (%):   1.50~2.00
V (%):     0.25 ~ 0.40
N (%):     0.02 ~ 0.04
 
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot forming temperature /℃:    1150~800
Heat treatment temperature /℃ | annealing:   660~690    
Heat treatment temperature /℃ | quenching or solution:  1050±15 oil 
Heat treatment temperature /℃ | tempering: 640~690
Heat treatment temperature /℃ | ageing:   590~640
Condition: heat treatment
Mechanical property under room temperature |σb/MPa: 950~ 1150                  
Mechanical property under room temperature  |σs≥/MPa:  800    
Mechanical property under room temperature |δ5≥(%):   13      
Mechanical property under room temperature |Akv(DVM):  55       
Heat stability temperature/℃:   580
Non-scale temperature in air /℃: 600
 
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.
 
INVENTORY LIST - Forged bar
Diameter: 95mm, 160mm, 200mm
 
PRODUCT PROFILE & DIMENSIONS
Round bar / Wire rod (Diameter): 5.5 to 450mm
Square bar / Flat bar: 10 to 600mm
Plate / Sheet steel / Steel strip: Thickness 0.5 to 5mm
Width: 8mm to 1000mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts / other different shapes based on OEM.
 
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry or help, pleased to Email (sales@ccsteels.com) or call our resident team of qualified production engineers.  

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