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Stainless steel

DIN ASTM/ AISI GB standard

free cutting steel

303.303Cu.316F.416.420F.430F.430FR.440F DIN EN 10087 10277-3

tool steel

alloy tool steel high speed tool steel

Heat resistant steel


Tool steel

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.

bearing steel

Bearing steel GB / DIN/ ASTM standard

Spring steel

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 steel

Alloy 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.


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Home » Stainless steel » Product introduction

1.4303/X5CrNi18-12 / X4CrNi18-12/AISI308/UNS S30800

  • Numbers: 1.4303
  • Model: 1.4303
  • Producers: Jiangyou, Sichuan, China
  • Update time: 2011.07.06
  • Browse:

Product Description:

C≤0.06   Si≤1.00   Mn≤2.00    P≤0.045    S≤0.015    Cr 17.0-19.0   Ni 11.0-13.0    N≤0.11

UNS S30800

Properties  Conditions 
T (°C) Treatment
Density (×1000 kg/m3) 8 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 193 25  
Tensile Strength (Mpa) 515  25  hot finished and annealed (plate, sheet, strip) more
Yield Strength (Mpa) 205 
Elongation (%) 40 
Reduction in Area (%) 50 
Hardness (HRB) 88 (max)  25  annealed (plate, sheet, strip

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