303

303 Stainless Steels to A 314 (2008)

303 - Specification & Application

  • A 314 (2008) - Stainless Steel Billets and Bars for Forging
  • A 473 (2009) - Stainless Steel Forgings
  • A 581/A 581M (2009) - Free-Machining Stainless Steel Wire and Wire Rods
  • A 582/A 582M (2012) - Free-Machining Stainless Steel Bars
  • A 895 (2009) - Free-Machining Stainless Steel Plate, Sheet, and Strip
  • A 959 (2011) - Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

Stainless Steel Billets and Bars for Forging

Chemical composition(wt.%) of 303 grade: to A 314 (2008)

Elements Min.（≥） Max.（≤） Similar Remarks
C - 0.15
Si - 1.00
Mn - 2.00
P - 0.2
S 0.15 -
Cr 17.0 19.0
Ni 8.00 10.0
Mo - 0.60

303 - Detail

Stainless Steel Billets and Bars for Forging

Mechanical properties of grade 303 A 314 (2008)

Proof strength
Rp0.2 (MPa)		 Tensile strength
Rm (MPa)		 Impact energy
KV (J)		 Elongation at fracture
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
934 (≥) 711 (≥) 32 22 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical properties of grade 303 A 314 (2008)

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm		 Modulus of elasticity
kN/mm2		 Expansion rate
874 (≥) 164 (≥) 33 23 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 441
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
811 319 165

Equivalent Grade

1 303S42 2 303S31 3 1.4303 4 CNS 303 5 CNS 303Se 6 STS303 7 STS303Se 8 SS 2303 9 S30317 10 S30327 11 GH3030 12 GH3039 13 303 14 A 314 303 15 A 473 303 16 A 581 Type 303 17 A 582 Type 303 18 A 895 Type 303 19 A 959 Type 303 20 A 314 S30300

Equivalent Products

1 GH3039 round bar

Product shapes we supply:

We can customize the production of 303 grade, contact us for the best solution.
–sales@specificsteel.com