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Home Material JIS G 4303-2005
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Grade SUS 303
Corresponding Standard JIS G 4303-2005
Stainless steel bars
Classification Austenitic Stainless Steel
Properties Corrosion Resistance
SUS 303 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value - - - - 0.15 17 8 -
Maximum Value 0.15 1 2 0.2 - 19 10 0.6
SUS 303 Mechanical Properties
diameter(thickness)
d(t)
mm		 Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
% 		Hardness
HBW
≤180 ≥520 ≥205 ≥40 ≥50 ≤187
1 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade BS EN/BS
Y12Cr18Ni9
(Y1Cr18Ni9) 		S30317 303 SUS 303 STS 303 303 S30300 X10CrNiS 18-9 4305-303-00-I X8CrNiS 18-9
(X10CrNiS 18-9) 		1.4305 Z10CNF 18-09 X8CrNiS 18-9 1.4305 303S21
2 Approximate Comparison Table
Japan United States France European Standard Sweden United Kingdom
JIS ASTM NF EN/NF EN Numerical Grade SS BS EN/BS
SUS303 303 Z8CNF18-09 X8CrNiS18-9 1.4305 2346 303S31
3 Approximate Comparison Table Stainless steels for cold heading and cold extruding
China Japan South Korea United States International Organization for Standardization Germany France United Kingdom
GB JIS KS ASTM/AISI ISO DIN EN/DIN NF EN/NF BS EN/BS
Y1Cr18Ni9 SUS303 STS303 303 X8CrNiS18-9
17
ISO 683-13 		X10CrNiS18-9
(X12CrNiS 188)
DIN 17440-1972 		Z10CNF18.09 303S21
SUS303 Corresponding Standards(Same grade name, different standards)
1 JIS
SUS303
2 JIS G 4303-2005
SUS 303
3 JIS G 4304-2005
SUS 303 SUS 303-HP SUS 303-HS
4 JIS G 4308-2013
SUS 303
5 JIS G 4309-2013
SUS 303 SUS 303-W1
6 JIS G 4318-2016
SUS 303

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