- Round bar standard Download
- Square-shape steel standard Download
- Plate steel standard Download
- Billet standard Download
- Flat bar standard Download
- wire standard Download
- tube standard Download
- pipe standard Download
- Forging standard Download
- casting standard Download
- sheet standard Download
- round bar standard Download
- coil standard Download
- Bar stock standard Download
- profiled bar standard Download
1.4305, DIN X8CrNiS18-9, AISI 303
Square-shape steel standard Download
Plate steel standard Download
Billet standard Download
Flat bar standard Download
wire standard Download
tube standard Download
pipe standard Download
Forging standard Download
casting standard Download
sheet standard Download
round bar standard Download
coil standard Download
Bar stock standard Download
profiled bar standard Download
1.4305, DIN X8CrNiS18-9, AISI 303
Designation by Standards
|Brand Name||LH No.||Mat. No.||DIN||EN||AISI|
Chemical Composition (in weight %)
|max. 0.10||max. 1.00||max. 2.00||18.00||-||9.00||-||-||max. Cu=1.00|
303 is one of the most popular of all the free machining stainless steels. It offers good strength, corrosion resistance and great machinability. It will resist scaling at temperatures up to 871oC.
Used in an incredibly wide variety of parts both in screw and general machining industries. Applications include hardware, fasteners, valve parts, nozzles and trim. For the food processing industry, dairies, fotographic industry, for paint,soap, paper and textile production.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 203, 186 (200oC), 172(400oC)
Density [g/cm3]: 7.9
Thermal conductivity [W/m.K]: 14.6
Electric resistivity [Ohm mm2/m]: 0.73
Specific heat capacity[J/g.K]: 0.502
Coefficient of Linear Thermal Expansion 10-6 oC-1
Harden from a temperature of 1020-1070oC followed by water quenching. Structure is austenite with small ferrite component.
Mechanical properties in solution-annealed condition and reistance to intercrystalline corrosion
Hardness: 130-190 HB
0.2 % proof stress: 190 N/mm2 (for d<=160)
1.0 % proof stress: 225 N/mm2 (for d<=160)
Tensile strength: 510-750 N/mm2
Elongation: 35% (for d<=160, longit.)
Resistance to interystalline corrosion: no (in as delivered condition), no (in sensitised condition)
Note: Sensitisation treatment for 15 min at 700oC with subsequent cooling in air.
Mechanical Properties At Elevated Temperatures
|0.2 % proof stress in N/mm2||176||155||136||125||121||119||118|
Hot forming temperature: 1150-850oC.
Excellent speeds and feeds are capable with this material. The addition of sulfur causes a very brittle chip. Many companies now offer premium machinability grades, such as CarTech with their Project 70 and 7000 series.
Resistant to a variety of organic and inorganic chemicals, fresh water and atmospheric corrosion.
Although not recommended, welding may be performed if low temperatures are employed. Recommended filler metal is AWS E/ER312. At high temperature, the sulfur in 303 tends to precipitate at the weld boundary resulting in weak and brittle joints.
Minor deformation is possible with this alloy, although it is not its strong point. Type 303 Se is superior in this aspect.
Related hot word search:1.4305 DIN X8CrNiS18-9 AISI 303 1.4305, DIN X8CrNiS18-9, AISI 303 round bar,1.4305, DIN X8CrNiS18-9, AISI 303 forging,1.4305, DIN X8CrNiS18-9, AISI 303 sheet,1.4305, DIN X8CrNiS18-9, AISI 303 coil,1.4305, DIN X8CrNiS18-9, AISI 303 flat bar,1.4305, DIN X8CrNiS18-9, AISI 303 pipe,1.4305, DIN X8CrNiS18-9, AISI 303 Lrregular
- 1091.4310, DIN X12CrNi177, AISI 301
- 741.4138, DIN X120CrMo29-2
- 414140 PH
- 341.4842, DIN X12CrNi2520, AISI 310S
- 341.4913*, DIN X19CrMoVNbN11-1
- 331.3816, DIN X8CrMnN18-18
- 221.4762, DIN X10CrAl24, AISI 446
- 171.4828, DIN X15CrNiSi20-12, AISI 309
- 17List of ASTM International standards
- 16Stainless Steel Surface Finishes