Hot: 17-4ph 4145H Alloy 200 HASTELLOY® C-276 30CrNiMo8 34CrNiMo6

Product categories

Stainless Steel

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.

Mould Steel

Steel mould and Steel mould suppliers, global delivery, stock supply Steel mould steels.

Heat Resistant Steel

Heat resistant steel. AS Orlov Izobret. Mashinostr. 3, 48-49, 7/2000. The purpose of this work was to increase plasticity of heat resistant steel after aging at the 500-1300 deg C temperature and to improve its operational reliability.

Tool Steel

Comprehensive stocks held of tool steel, including hot work, cold work and plastic mould tool steel specifications. Below we detail our most common grades. Other British Standard and international special steels and tool steels are also available, please contact our sales office.

Ball Bearing Steel

Supplies Ball bearing steel of all types, along with carbon steel and specialty balls, to OEM's around the world. Also offers platinum balls, brass balls, gold, titanium, aluminum, carbon and plastic balls.

Spring Steel

Carbon spring steel is held in a wide range of sizes. Detailed below are our most common specifications. Carbon steel strip and spring steel sheet is available most commonly in the hardened and tempered condition, though certain sizes are available in the annealed condition. Round and flat bar is stocked in the as rolled condition. Most spring steel specifications are held to British Standard steel specifications including BS1449 & BS970.

Alloy and Carbon Steel

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.

News

Enterprise email

Home » Stainless Steel » Product introduction

1.4003 Stainless Steel

Numbers: 2011072202
Model: 1.4003
Producers: China
Update time: 2011.07.22
Browse:

Product Description:

Stainless steel

1.4003 Stainless Steel

Other name:3Cr12

1.4003 is a chromium containing corrosion resisting steel developed as an alternative material of construction where the mechanical properties, corrosion resistance and fabrication requirements of other materials such as mild steel, galvanised or aluminised steel, aluminium or pre-painted steels are unsuited.

Originally 1.4003 was not included in any international specifications. However, a 12 per cent chromium steel developed from 1.4003 has been designated DIN type 1,4003 and ASTM/ASME 41003. The former has been incorporated into two Euronorm Standards viz. EN 10088 and EN 10028, 1.4003 conforms to the requirements of the above specifications and is multi certifiable to 1.4003, 1.4003 and 41003, due to its inclusion in the above specifications. 1.4003 vessels and tanks can be designed in accordance to BS5500, ASME, AD Merkblatter codes and the Euronorm design specification currently in preparation.

Although 1.4003 is recognised as the World's most specified 12% Chromium utility steel, it is by no means universal and should not be substituted for higher grades of Stainless steel unless detailed corrosion testing has been carried out. Columbus Stainless can be consulted for advice in this regard.

1.4003 was designed as a corrosion resisting steel and, as such, will exhibit staining when exposed to aggressive atmospheric conditions. In applications where aesthetic appearance is important, it is recommended that 1.4003 is painted, or a higher grade should be used.

A long term atmospheric corrosion programme conducted over 20 years bv the CSIR has shown 1.4003 to have very good atmospheric corrosion resistance, Stainless steels, with their higher chromium contents, exhibited very low corrosion rates. Because of 1.4003's inherent corrosion resistance, it has been used successfully under wet sliding abrasion conditions such as found in the mining and bulk handling industries. In the case of mild or low Alloy steels the presence of moisture in the solids being transported aggravates deterioration of the working surfaces. Not only does the surface rust wear away rapidly exposing bare metal to further corrosion, but corrosion of the working surface leads to 'hang-up' and interrupted flow. 1.4003 resists the corrosive attack and thereby improves flow and reliability, while extending the life of the solids handling equipment.

Although 1.4003 performs very well in corrosion-abrasion applications, no real benefit can be gained by using it under dry abrasion conditions. 1.4003 is not especially suitable under conditions of impact abrasion. (See: A Guide to the Use of 1.4003 in Corrosion Abrasion Applications).

1.4003 has been extensively used in aqueous environments, and has been successful in many applications involving exposure and/or immersion. It is important when using 1.4003 in aqueous environments that the decision be based on a thorough water quality analysis and microbial count. (See: A Guide to the use of 1.4003 in Water).

1.4003 is designed with ease of fabrication in mind and its composition and properties result in good forming, drawing, blanking and punching characteristics. The steel is easily welded by any of the recognised welding processes and should be post weld pickled/cleaned and passivated.

1.4003 has been included in SABS 0162 Part 4 - Code of Practice for the Structural Use of Steel. When replacing carbon steel with 1.4003, it is necessary to redesign mild and constructional steel components using the mechanical and corrosion resisting properties of 1.4003 in order to gain full advantage of potential material and fabrication savings.

This document covers black (hot rolled and annealed) 1.4003 as well as pickled (No1 and 2B) material, 1.4003 is available in the following finishes HRA, No 1, 2D and 2B, Whereas the latter three finishes can be used for all suitable 1.4003 applications, the HRA finish should only be used in applications where wet sliding abrasion occurs. It should never be used in immersion conditions The mechanical properties of the HRA material are similar to those of the No 1 finish material. A long term atmospheric programme conducted over 20 years by the CSIR has shown 1.4003 to have very good atmospheric corrosion resistance.

Properties of 1.4003
Chemical Composition

%C	%Ni	%Mn	%Si	%P	%S	%Cr	Other
0.03 Max	1.5 Max	1.5 Max	1.0 Max	0.03 Max	0.03 Max	11.0 - 12,0	Ti 0.6 Max

1. Mechanical Properties

Ultimate Tensile Strength (Transverse)	450 MPa Min
0.2% Offset Proof Strength (Transverse)	< 6,0 mm thick - 320 MPa Min > 6,0 mm thick - 280 MPa Min
Elongation (in 50mm)	< 6,0 mm thick = 20% Min
	> 6,0 mm thick = 18% Min
Hardness	< 12.0 mm thick - 220 Brinell Max
	> 12.0 mm thick - 250 Brinell Max
Charpy Impact (Ambient temperature)	35 J/cm² Min

2. Fatigue

Extensive testing has shown that 1.4003 behaves in a similar manner to constructional steels such as BS4360 Grade 43A in terms of fatigue. Accepted procedures when desgning for fatigue loaded structures should be followed. BSBS7068 can be used.

3. Physical Properties

At Room Temperature.
Density		7 740 kg/m³
Elastic Modulus (Tension)		200 GPa
Specific Heat Capacity		478 J/kg K
Thermal Conductivity	@ 100^oC	30.5 W/m K
	@ 500^oC	40.0 W/m K
Electrical Resistivity		66 x 10^-9Wm
Co-efficient of	0-100^oC	11,1 mm/mK
thermal expansion	0-300^oC	11.7 mm/mK
	0-700^oC	12.3 mm/mK
Melting Range		1'430 - 1'510^oC
Relative Permeability		Ferromagnetic

4. Corrosion Resistance

1.4003, with chromium as its major alloying element, is not intended as a material for use in contact with process solutions such as acids, salts, etc. It is more suited to applications involving ancilliary equipment on process plants such as cable racking, stairways, flooring, handrailing, etc. 1.4003 is a "corrosion resistant" rather than "stainless" steel and as such, will tend to form a light, surface rust or discolouration when exposed to aggressive environments. This patina is superficial and does not affect the mechanical properties of the steel.
Should aesthetic or hygienic qualities be of prime importance, Stainless steels rather than 1.4003 should be considered, although 1.4003 can be successfully painted with a number of paint systems.

Aqueous Corrosion

It is recommended that consultations be held with Columbus Stainless technical staff on the use of 1.4003 in water.
At the design stage, efforts must be made to avoid crevices, sedimentation, stagnancy, high operating temperatures etc., as these facts will have a negative impact on the performance of the steel.
1.4003 is not recommended for use in hot water systems unless detailed testing has previously been carried out.

Atmospheric Corrosion

A long term atmospheric corrosion programme conducted over 10 years by the CSIR has shown 1.4003 to have very good atmospheric corrosion resistance. Data on the performance of various materials at different test sites is available from VRN Technical staff.

5. Fabrication of 1.4003

Note: A detailed 1.4003 fabrication guideline is available from Columbus Stainless.

Cutting

For general fabrication requirements, the most effective cutting methods are:

Abrasive disc	- use dedicated discs
	- avoid overheating
	- vitrified or resinoid aluminium oxide discs recommended

Plasma	- oxygen-free nitrogen is the most economical primary cutting gas. (Other gasses can be used)
	- heat discolouration must be removed prior to use in a corrosive environment

Guillotine	- use well sharpened and correctly alligned and set blades to avoid shearedbreaks and rollover.
	- capacity of guillotine (rated in terms of mild steel thickness) must be downrated by 40% of 1.4003.

Forming

It is important to note that due to the higher proof strength of 1.4003, more power is required for most forming operations, than would be needed for mild steel.
When bending 1.4003 it is important to maintain a minimum inner bend radius equal to twice the material thickness. Reverse bending at ambient temperatures is not recommended - the bend area should be preheated to +- 150^oC . Edge cracks can be avoided by placing the cut face on the outside radius of the bend and the sheared face on the inside. This type of cracking can also be prevented by grinding the outside radius point of bending into a rounded profile, thus eliminating the natural stress concentration point.

Welding

Manual metal arc, metal inert gas and tungsten inert gas are the common procedures used. All welding procedures must ensure that heat inputs are kept to a minimum. Down-hand welding is the preferred welding position and bead runs rather than weaving should be used. Austenitic Stainless steel filler metals such as AWS ER 309L, 308L, or 316L should be used.
In order to ensure adequate corrosion resistance in weld zones, it is necessary to remove all heat tint by pickling or by some mechanical means and passivating with a cold 10% nitric acid solution after cleaning. Thorough washing with clean, cold water pickling and passivating is essential.

Machining

In the annealed condition, 1.4003 has machining characteristics similar to AISI 430 i.e. a machinability rating of 60. The reduced extent of work-hardening compared to austenitic Stainless steel eliminates the need for special cutting tools and lubricants. Slow speeds and heavy feeds with sufficient emulsion lubricant will prevent machining problems.

Fastening

Where 1.4003 sections are to be bolted, stainless feel fasteners such as type 304 or 431 are preferred. If bolted structures are to be used in humid or wet environments, it is strongly recommended that compressible, non-absorbant gaskets such as rubber be used.

Thermal Processing

Annealing
1.4003 is supplied in the annealed condition, its softest and most ductile state. After severe cold forming operations or after hot forming operations above 750^oC, annealing may be required. Annealing is carried out at 700-750^oC followed by air cooling.
Soaking times are 12 hours per 25mm section.

Stress Relieving
Stress relieving is not recommended for 1.4003. If it is essential, temperatures of not more than 450^oC should be employed.

Hot Forming
Any hot forming should preferably be conducted at temperatures below 750^oC. The recommended temperature range is between 600^oC and 700^oC and annealing should be performed after forming.

Product description:

Step Shaft 1.4003 Tube 1.4003 Pie-shaped 1.4003 Ring 1.4003 Module Large valves of the main 1.4003 Other Profiled forgings 1.4003

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 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.