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X11CrNiMoN12
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X11CrNiMoN12 & AMS 1.4939 is martensitic stainless steel 1.4938 is widely used to produce the high temperature components for gas turbine.

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.

MATERIAL DATA SHEET - X11CrNiMoN12

MATERIAL CATEGORY - High temperature high strength steel and superalloy

PRODUCT DESCRIPTION

The alloy is usually produced by EF + VD 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 / Quenched and tempered

MATERIAL SPECIFICATIONS - DIN 17742, 17460, 17480 (2002/1992), DIN EN 103021, 10296, 10095

AVAILABLE SHAPES

Round bar / flat bar / hollow bar / foring stock / Ring / Valve set

Bright - peeled + polishing /centerless grinding /peeled + slidabrading

Forged - ring /pipe casing /discs /shaft

TYPICAL CHEMICAL COMPOSITIONS (mass weight %)

Carbon, C (％): 0.08～0.15
Silicon, Si (％): ≤ 0.50
Manganese, Mn (％): 0.40～0.90
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 11.0～12.5
Nickel, Ni (％): 2.00～3.00
Molybdenum, Mo (％): 1.50～2.00
Vanadium, V (％): 0.25～0.40

Nitrogen, N (%): 0.010～0.050

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

MECHANICAL PROPERTY UNDER HIGH TEMPERATURE

Mechanical property above 200℃ σ0.2/MPa，at following temperature /℃|200:    800
Mechanical property above 200℃ σ0.2/MPa，at following temperature /℃|300:    770
Mechanical property above 200℃ σ0.2/MPa，at following temperature /℃|400:    700
Mechanical property above 200℃ σ0.2/MPa，at following temperature /℃|500:    590
Mechanical property above 200℃ σ0.2/MPa，at following temperature /℃|600:    350
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:   -
Creep rupture strength /MPa，at following time/h and temperature /℃|1000h|700:    -
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:   98
Creep rupture strength /MPa，at following time/h and temperature /℃|10000h|700:   -
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: 49

Creep rupture strength /MPa，at following time/h and temperature /℃|100000h|700:    -
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

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.

PRODUCT PROFILE & DIMENSION

Round bar / rod / disc (diameter): 6.0 to 900mm

Square bar / flat bar: 10 to 600 mm

Plate / Sheet steel / strip: thickness 1.0 ~ 20 mm

Width: 8 to 1000 mm

Length: random length or based on the customer's special requirement.

Forged steel shape: stepped shafts / other different shapes based on OEM.

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