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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.
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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
321H 1.4893 Stainless Steel
- Numbers: 2011071821
- Model: 321H 1.4893
- Producers: China
- Update time: 2011.07.18
- Browse:
Product Description:
Chemical Composition %
C 0.08
Mn 2.00
P 0.040
S 0.030
Si 0.75
Cr 17.0-20.0
Ni 9.0-13.0
Ti Trace
The titanium content shall not be less than 5 times the carbon content and not more than 0.60% Note: 321 H requires the titanium content to be not less than 4 times the carbon content and not more than 0.60%
SPECIFICATI0NS
ASTM
A312, A403, A182, A479, A276
ASME
SA312, SA403, SA182, SA479, SA276
TENSILE REQUIREMENTS KSI can be converted to MPA (Megapascals) by multiplying by 6.89
Tensile Strength (KSI) 75
Yield Strength (KSI) 30
DESCRIPTION
These titanium bearing Stainless steels are stabilized against carbide precipitation and designed for operation within the damaging temperature range where carbide precipitation develops. In this type of steel, the carbon combines preferentially with titanium to form a harmless titanium carbide, leaving the chromium in solution to maintain full corrosion resistance. Type 321 is basic type 304 modified by adding titanium in an amount at least 5 times the carbon plus nitrogen contents.
DESIGN FEATURES
• Immune to intergranular corrosion when
heated within the carbide precipitation range.
• Titanium addition eliminates the formation of
chromium carbides at the grain boundaries by
tying up the carbon and nitrogen as titanium
carbides or nitrides.
Better high temperature properties than 304 or
304L. Generally used for parts which are intermittently heated up to 1500 deg.F. For
continuous service the alloy is good to 1650 deg.F.
• May be susceptible to chloride stress cracking.
• Excellent weldability in field.
• Type 321 H has high carbon (.04 - 10) for better high temperature creep properties.
TYPICAL APPLICATIONS
High temperature chemical process heat exchanger tubes Refineries High temperature steam service
AVAILABILITY Step Shaft 321H 1.4893 Tube 321H 1.4893 Pie-shaped 321H 1.4893 Ring 321H 1.4893 Module Large valves of the main 321H 1.4893 Other Profiled forgings 321H 1.4893 Special Steel classification: Stainless steel, Hi-Steel HSLA-80, Mould steel, Heat resistant steel, Tool steel, Ball bearing steel,Spring steel, Alloy steel, Construction steel, Die steel, High-speed steel, angles, channels, H steel, I-beams, welded pipes, seamless tubes, Standard: 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: Square bar: Plate steel/flat bar: Tube/pipe: 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.
Seamless Pipe 1/2" - 16"
Weld Pipe 6" - 12"
Bar 1" - 12"
Butt-Weld Flanges 1/2" - 8"
Flanges 1/2" - 8"
Our Products meet Chinese GB, Japanese JIS, US ASTM, UK BS, EU DIN standards and so on.
Diameter : 1mm-2000mm
Size: 50mm * 50mm-600mm *600mm
Size: Thickness: 0.1mm-800mm Width: 10mm to 1500mm
Size: OD: 6-219mm WT: 1-35 mm.
