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Alloy steel is steel alloyed with a variety of elements in total amounts of between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low alloy steels and high alloy steels. The difference between the two is somewhat arbitrary: Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0 %.[1][2] Most commonly, the phrase "alloy steel" refers to "low alloy" steels.

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Home » Alloy and Carbon Steel » Product introduction

INCONEL 718 Steel

  • Numbers: 2011072107
  • Model: INCONEL 718
  • Producers: China
  • Update time: 2011.07.21
  • Browse:

Product Description:

Alloy steel

INCONEL 718 Steel

ASTM B637, B 670, B 906
UNS Number N07718
NACE MR-01-75

Other common names: Alloy 718, Haynes® 718, Nicrofer® 5219, Allvac® 718, Altemp® 718

 

Chemical Composition, %

 

 

 

Inconel 718 is a nickel-chromium-molybdenum alloy designed to resist a wide range of severely corrosive environments, pitting and crevice corrosion. This nickel steel alloy also displays exceptionally high yield, tensile, and creep-rupture properties at high temperatures. This nickel alloy is used from cryogenic temperatures up to long term service at 1200° F. One of the distinguishing features of Inconel 718’s composition is the addition of niobium to permit age hardening which allows annealing and welding without spontaneous hardening during heating and cooling. The addition of niobium acts with the molybdenum to stiffen the alloy’s matrix and provide high strength without a strengthening heat treatment. Other popular nickel-chromium alloys are age hardened through the addition of aluminum and titanium. This nickel steel alloy is readily fabricated and may be welded in either the annealed or precipitation (age) hardened condition. This superalloy is used in a variety of industries such as aerospace, chemical processing, marine engineering, pollution-control equipment, and nuclear reactors.
Inconel 718 Available Forms

• Sheet
• Plate
• Bar
• Wire
Characteristics of Inconel 718
• Good mechanical properties – tensile, fatigue and creep-rupture
• Yield tensile strength, creep, and rupture strength properties are exceedingly high
• Highly resistant to chloride and sulfide stress corrosion cracking
• Resistant to aqueous corrosion and chloride ion stress corrosion cracking
• High temperature resistant
• Age-hardenable with a unique property of slow aging response that permits heating and cooling during annealing without the danger of cracking.
• Excellent welding characteristics, resistant to postweld age cracking 
 

Inconel 718 Application
• Chemical processing
• Aerospace
• Liquid fuel rocket motor components
• Pollution-control equipment
• Nuclear reactors
• Cryogenic storage tanks
• Valves, fasteners, springs, mandrels, tubing hangers
• Well head completion equipment and blow out preventers (BOP’s)
• Gas turbine engine parts
 

ASTM Specifications

Sheet/Plate
Bar
Wire
B670
B637
-

Mechanical Properties
Typical room temperature properties, 1800°F annealed condition

Ultimate Tensile Strength, psi
.2% Yield Strength psi
Elongation %
Hardness Rockwell B
135,000
70,000
45
100

 
 
Product description:
Step Shaft INCOLOY 718    Tube INCOLOY 718    Pie-shaped INCOLOY 718    Ring INCOLOY 718     Module Large valves of the main INCOLOY 718     Other Profiled forgings INCOLOY 718  
Special Steel classification:
Stainless steel, Hi-Steel HSLA-80, Mould steel,  Heat resistant steel, Tool steel, Ball bearing steel,Spring steelAlloy steel,  Construction steel,  Die steel, High-speed steel,  angles, channels, H steel, I-beams, welded pipes, seamless tubes,
Standard:
Our products meet Chinese GB, Japanese JIS, US ASTM, UK BS, EU DIN standards and so on.
Our advantages:
Our advantages such as advanced management and operation concepts, suitable work facilities, highly qualified talents and a number of trade partners who have long-term and close cooperation with us have ensured us to provide global customers with competitive high-quality commodities and excellent services, quickly, accurately, conveniently and completely.
Products Introduction:
Specifications
Round bar:
Diameter : 1mm-2000mm
Square bar:
Size:  50mm * 50mm-600mm *600mm
Plate steel/flat bar:
Size: Thickness:  0.1mm-800mm Width: 10mm to 1500mm
Tube/pipe:
Size: OD:  6-219mm  WT: 1-35 mm.
Cold-rolled sheet: Thickness:  2-5mm Width:1000mm Length: 2000mm
Hot-rolled sheet: Thickness:6-80mm Width: 210-610mm
Length:  We can supply any length based on the customer's requirement.
Forging/hot rolling/ extrusion of steel.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Finished goods condition:  hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions:  scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing:  electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection:  100% ultrasonic inspection for any inperfections or based on the customer's requirement
Excellent service for all kinds of industries, with advantages of technologies,  equipment and price.
We serve you with our honesty,  integrity,  and professionality.

Ni
Fe
Cr
Cu
Mo
Nb
C
Mn
50.00-55.00
Remainder
17.00-21.00
.30 max
2.80-3.30
4.75-5.50
.08 max
.35 max
 
P
S
Si
Ti
Al
Co
B
 
.015 max
.015 max
.35 max
.65-1.15
.20-.80
1.00 max
.006 max
 

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TEL:+86-15328239557 | FAX:+86-816-3639422 | E-mail:sales@specialsteel-jy.com | Add:119#,Jiangdong road, Sanhe Town,Jiangyou City, Sichuan Province, China | Zip:621701