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Hi - Speed, high Speed Steel Tool Steel (made) : highly processed into the Tool Steel, carbon content high, while containing cr quantity is low (about 4%), reason burnish of Steel surface gloss darker, after heat can reach by HRc62 high hardness, resistance to rust performance not on a roll.

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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

Alloy 800/800H/800HP

  • Numbers: 2011071917
  • Model: Alloy 800/800H/800HP
  • Producers: China
  • Update time: 2011.07.19
  • Browse:

Product Description:

Alloy steel

Alloy 800/800H/800HP Alloy Steel

SPECIFICATION

ASTM B407, B514, B366, B408, B564
ASME SB407, SB514, SB366, SB408, SB564

Chemical Composition

 

Ni
Fe
Cr
Cu
Ti
Al
C
Mn
S
Si
30.0-35.0
39.5 min
19.0-23.0
.75 max
.15-.60
.15-.60
.05-.10 max
1.5 max
.015 max
1.0 max
DESCRIPTION
Alloy 800 is a widely used material of construction for equipment that must resist corrosion, have high strength or resist oxidation, carburization and other harmful effects of
high-temperature exposure. For high temperature applications requiring optimum creep and rupture properties Alloy 800HP is used. The Chromium in the alloy imparts resistance to oxidation and corrosion. The high Nickel content maintains an austenitic structure so that the alloy is ductile. The Nickel also contributes resistance to scaling, general corrosion and stress corrosion cracking. The iron content provides resistance to internal oxidation.

DESIGN FEATURES
Good creep-rupture properties at temperatures above 600 deg. C (1110 deg.F) without loss of ductility during long term use at temperatures below 700 deg. C (1290 deg.F), due to limitation of (Ti & A) content to max 0.7%. However, by using 800HP with increased (Al & Ti) content to 1.2%, temperatures above 700 deg. C (1290 deg.F) can be achieved.
Good resistance to reducing oxidizing and nitriding atmospheres and to atmospheres which alternates between reducing and oxidizing conditions.
Metallurgical stability in long-term applications at high temperatures.

TYPICAL APPLICATIONS
Steam / hydrocarbon reforming for components such as pig tails, headers, collectors, manifolds, transfer piping, catalyst tubes, and quench system piping
Ethylene pyrolsis tubing in convection and radiant sections - resistance to carburization and good mechanical properties
Ethylene dichloride cracking tubes - resistance to carburization and to dry hydrogen chloride and chlorine
Components, eg. Heat exchangers, piping systems, etc... in coal conversion plants
Steam generators tubing in helium coolant, high temperature reactor systems - high strength, resistance to helium and steam


TENSILE REQUIREMENTS
Tensile Stength (KSI) 72.5
Yield Strength (KSI) 25

KSI can be converted to MPA (Megapascals) by multiplying by 6.895.

Product description:

Step Shaft Alloy 800/800H/800HP    Tube Alloy 800/800H/800HP    Pie-shaped Alloy 800/800H/800HP    Ring Alloy 800/800H/800HP     Module Large valves of the main Alloy 800/800H/800HP     Other Profiled forgings Alloy 800/800H/800HP  

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.

  

Stainless Steel Suppliers | Hi-Steel HSLA-80 | Steel mould | Heat resistant steel | Tool Steel | Ball bearing steel | Spring steel | Alloy

Copyright 2003 - 2011 China longhai special steel Co., LTD is mainly engaged in all kinds of stainless steel 630 production, wholesale, retail enterprises

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