X12CrCoNi21-20/1.4974 datasheet,X12CrCoNi21-20/1.4974 chemical,X12CrCoNi21-20/1.4974 heat treatment
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X12CrCoNi21-20/1.4974
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Technical specifications of superalloy DINX12CrCoNi21-20 / W-Nr 1.4971/AMS1.4974- DATA SHEET MATERIAL CATEGORY X12CrCoNi21-20/1.4974, High temperature high strength steel
DIN X12CrCoNi21-20 / W-Nr 1.4971/ AMS 1.4974 - DATA SHEET 
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  (2002/1992), DIN EN 103021, 10296, 10095 (2002/1999)
AVAILABLE SHAPES  
Black bar /Flat bar /square bar  
Bright - peeled + polishing /centerless grinding /peeled + slidabrading
Forged - ring /pipe casing /discs /shaft
CHEMICAL COMPOSITION (WEIGHT %)  -  DIN X12CrCoNi21-20 / W-Nr 1.4971
C (%):     0.08~0.16
Si (%):    ≤1.00
Mn (%):   1.00~2.00
P (%)≤:   0.040
S (%)≤:   0.030
Cr (%):    20.0~22.5
Ni (%):    19.0~21.0
Mo (%):   2.50~3.50
Other (%):    Co 18.5~21.0, W 2.00~3.00, Nb/Ta 0.75~1.25, N 0.10~0.20
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot forming temperature /℃:    1150~950
Heat treatment temperature /℃ | annealing:  -    
Heat treatment temperature /℃ | quenching or solution:  1165~1195 air
Heat treatment temperature /℃ | tempering: 800~830
Heat treatment temperature /℃ | ageing:   -
Condition: precipitation hardening
Mechanical property under room temperature |σb/MPa: 690~930
Mechanical property under room temperature  |σs≥/MPa: 345  
Mechanical property under room temperature |δ5≥(%):  20
Mechanical property under room temperature |Akv(DVM):  41   
Heat stability temperature/℃:  730
Non-scale temperature in air /℃:  980
MECHANICAL PROPERTY UNDER HIGH TEMPERATURE
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|200:   275            
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|300:    255       
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|400:    245      
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|500:    245      
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|600:    235  
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|700:     216
Mechanical property above 200℃ σ0.2/MPa,at following temperature /℃|800:     157
Creep rupture strength /MPa,at following time/h and temperature /℃|1000h|600:   353
Creep rupture strength /MPa,at following time/h and temperature /℃|1000h|700:    206
Creep rupture strength /MPa,at following time/h and temperature /℃|1000h|800:    103
Creep rupture strength /MPa,at following time/h and temperature /℃|1000h|900:    39

Creep rupture strength /MPa,at following time/h and temperature /℃|10000h|600:  284
Creep rupture strength /MPa,at following time/h and temperature /℃|10000h|700:   147
Creep rupture strength /MPa,at following time/h and temperature /℃|10000h|800:    65
Creep rupture strength /MPa,at following time/h and temperature /℃|10000h|900:    -

Creep rupture strength /MPa,at following time/h and temperature /℃|100000h|600:   216
Creep rupture strength /MPa,at following time/h and temperature /℃|100000h|700:   98
Creep rupture strength /MPa,at following time/h and temperature /℃|100000h|800:   34
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.
PRODUCT PROFILE  
Round bar / Wire rod (Diameter):  0.50mm to 3000mm
Square bar / Flat bar: 3mm to 2000mm
Plate / Sheet steel / Steel strip: 0.1mm to 2500mm
Width: 8mm to 2500mm
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: OD 3-219 mm, with wall thickness ranging from 0.50 to 35 mm.

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