Inconel 718
2016-11-02 09:39:12 Origin： Remark：0 Click：
Precipitation hardening Nickel base Steel Inconel 718 Round bar, flat bar, plate ESR melted, Inconel 718 Hot forging, Hot rolling, Heat treatment, Straightening, Ultrasonic test, Cold machined.
TECHNICAL SPECIFICATION - Grade Inconel 718
TECHNICAL SPECIFICATION - ASTM B637 - 2011
OFFICIAL TEST CERTIFICATE - issued by TUV - SGS - BV
MATERIAL CATEGORY - Precipitation hardening and cold worked nickel alloy
CHEMICAL COMPOSITION (mass weight %)
Carbon, C (％): ≤ 0.08
Silicon, Si (％): ≤ 0.35
Manganese, Mn (％): ≤ 0.35
Phosphorus, P (％) ≤: 0.015
Sulfur, S (％) ≤: 0.015
Chromium, Cr (％): 17.0 ~ 21.0
Cobalt, Co (%): ≤ 1.00
Molybdenum, Mo (％): 2.80 ~ 3.30
Niobium, Nb/Ta (％): 4.75 ~ 5.50
Titanium, Ti (%): 0.65 ~ 1.15
Aluminum, Al (%): 0.20 ~ 0.80
Boron, B (%): ≤ 0.006
Ferrum, Fe (%): Remainder
Copper, Cu (%): ≤ 0.30
Nickel, Ni (%): 50.0 ~ 55.0
Niobium, Nb (%): -
Nickel, Ni (%): 50.0 ~ 55.0
Niobium, Nb (%): -
Tungsten, W (%): -
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Condition: Solution + Stabilize + Precipitation harden
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Condition: Solution + Stabilize + Precipitation harden
Heat treatment pratice:
Solution treatment 924 ~ 1010 Deg. hold 1/2h min., cool at rate equivalent to air cool or faster
Precipitation hardening treatment, 718+/-14 Deg, hold at temperature for 8h, furnace cool to 621+/-14 Deg., hold until total precipitation heat treatment time has reached 18h, air cool
Tensile strength,σb/≥ MPa: 1275
Tensile strength,σb/≥ MPa: 1275
Yield strength, σ0.2/≥ MPa: 1034
Elongation, δ ≥(％): 12.0
Reduction of area, ф ≥ (％): 15.0
Hardness | HBW: 331 min.
STRESS RUPTURE REQUIREMENT
Test temperature: 649 Deg.
Stress /MPa: 690
Time to rupture: 23h
Elongtation, (%): 5.0
TYPICAL APPLICATIONS
Starndard specification for high-temperature bolting, with expansion coefficients comparable to austenitic stainless steel with yield strength ranging from 345 to 827 MPa for use in high-temperature service such as fasteners for pressure vessel and valve flanges.
Nuclear reactor, Turbine engine parts - mechanical gears, gear shaft, main axis, blade.
Mechanical parts - bolt and nut, fastener, Gas turbine blade, Fuel nozzle
These materials must stand up to high heat, extreme oxidation potential and recycling.
AVAILABLE FORMS AND SHAPES
Round bar (Diameter): 2.0mm to 400mm
Square bar / Flat bar: 3mm to 610mm
Forging piece: stepped shafts, other different shapes based on OEM.
Elongation, δ ≥(％): 12.0
Reduction of area, ф ≥ (％): 15.0
Hardness | HBW: 331 min.
STRESS RUPTURE REQUIREMENT
Test temperature: 649 Deg.
Stress /MPa: 690
Time to rupture: 23h
Elongtation, (%): 5.0
TYPICAL APPLICATIONS
Starndard specification for high-temperature bolting, with expansion coefficients comparable to austenitic stainless steel with yield strength ranging from 345 to 827 MPa for use in high-temperature service such as fasteners for pressure vessel and valve flanges.
Nuclear reactor, Turbine engine parts - mechanical gears, gear shaft, main axis, blade.
Mechanical parts - bolt and nut, fastener, Gas turbine blade, Fuel nozzle
These materials must stand up to high heat, extreme oxidation potential and recycling.
AVAILABLE FORMS AND SHAPES
Round bar (Diameter): 2.0mm to 400mm
Square bar / Flat bar: 3mm to 610mm
Forging piece: stepped shafts, 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
Previous page：SUS304A
Last page：B637 Grade N07718
