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Stainless Steel specifications held in the austenitic, martensitic and precipitation hardening varieties. Stocks are held in British Standard and International standards. Below is listed our most commonly supplied grades; please contact our sales office. Also stock is 301 stainless spring temper rolled strip.

Hi-Steel HSLA-80

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 » Stainless Steel » Product introduction

Duplex Stainless Steel

  • Numbers: 2011030908
  • Model: Duplex
  • Producers: China
  • Update time: 2011.03.09
  • Browse:

Product Description:

Stainless steel

 Duplex Stainless Steel

Duplex is a stainless steel designed to combine improved resistance to stress corrosion cracking, pitting, crevice corrosion and high strength when compared with other stainless alloys. With its austenitic ferritic chromium, nickel, molybdenum composition duplex stainless steel alloy resists chloride environments and sulphide stress corrosion. Duplex Stainless Steel is designed to combine improved resistance to stress corrosion cracking, pitting, crevice corrosion and high strength when compared with other stainless alloys. Duplex resists chloride environments and sulphide stress corrosion. Duplex steel has a ductile/brittle transition at approximately -50°C. Duplex is also roughly double the strength of standard austenitic Stainless steels.

Duplex stainless steels have a mixed microstructure of ferrite and austenite , the aim of this being to produce a 50/50 mix, although in commercial alloys, the mix may be 40/60 respectively. Duplex stainless steel has improved strength over austenitic stainless steel and also improved resistance to localised corrosion, particularly pitting, crevice corrosion and stress corrosion cracking. Duplex stainless is characterised by high chromium (19–28%) and molybdenum (up to 5%) and lower nickel contents than austenitic Stainless Steels. The most used Duplex Stainless steel are the 2205 (22% Chromium, 5% Nickel) and 2507 (25% Chromium, 7% Nickel) sometimes the 2507 is also called Super Duplex due to the higher corrosion resistance.

Chemical Composition:

TYPICAL ANALYSIS

 

       

 

C.

Mn.

P.

S.

Si.

Cr.

Ni.

Mo.

N.

0.03%
max.

2.00%
max.

0.03%
max.

0.02%
max.

1.00%
max.

21.00-
  23.00%

4.50-
  6.50%

2.50-
  3.50%

0.08-
  0.20%

Mechanical Properties:

Typical Mechanical Properties

 

  Tensile Strength N/mm2

620 min.

  0.2% Proof Stress N/mm2

448 min.

  Elongation

25 min.

  Hardness (Brinell

290 max.

Heat Treatment.
Solution annealed at 1020°C - 1100°C Water Quench

Special Steel classification:

Stainless steel,Hi-Steel HSLA-80,Steel mould,Heat resistant steel,Tool steel,Ball bearing steel,Spring steel,Alloy steel,Construction steel,Die steel,Mould steel.

Product description:

Step Shaft Duplex Tube Duplex Pie-shaped Duplex Ring Duplex Module Duplex Large valves of the main Duplex Other Profiled forgings FV520B

Products Introduction  :

Specialized and high quality steel.

We have the advantages of equipment, technologies and price.

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:+86-13880247006 | FAX:+86-816-3639422 | E-mail:sales@specialsteel-jy.com | Add:119#,Jiangdong road, Sanhe Town,Jiangyou City, Sichuan Province, China | Zip:621701