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Stainless Tube
 
 
Material (Accroding to ASTM Standard)
Specification Commentary Grade Types UNS No.
A 213 Seamless Ferritic and Austenitic Alloy-Steel Boiler,
Superheater, and Heat-Exchanger Tubes		 TP 304 Seamless S30400
TP 304L Seamless S31403
TP 310 Seamless S31000
TP 316 Seamless S31600
TP 316L Seamless S31603
TP 321 Seamless S32100
TP 347 Seamless S34700
A 249 Welded Austenitic Steel Boiler Superheater,
Heat Exchanger and Condenser Tubes		 TP 304 Welded S30400
TP 304L Welded S31403
TP 310 Welded S31000
TP 316 Welded S31600
TP 316L Welded S31603
TP 321 Welded S32100
TP 347 Welded S34700
 
 
 
 
Chemical Composition
Classification Grade C Cr Ni Mo Others
KS(JIS) POSCO
A
U
S
T
E
N
I
T
E		 301 301 ≤0.15 16.0~18.0

6.00~8.00

 - -
301L 301L ≤0.03 16.0~18.0 6.00~8.00 -

N ≤ 0.20

304 304 ≤0.08 18.0~20.0 8.00~10.50 - -
304J1 304J1 0.02~0.05 16.5~17.1 7.5~7.9 - Cu 1.9~2.2
304L 304L ≤0.03 18.0~20.0 9.00~13.00 - -
304N1 304N1 ≤0.08 18.0~20.0 7.00~10.50 - N 0.10~0.25
304N2 304N2 ≤0.08 18.0~20.0 7.50~10.50 - Nb ≤ 0.15
305 305 ≤0.12 17.0~19.0 10.5~13.0 - -
- 305EG ≤0.08 15.0~17.0 13.0~15.0 - -
309S 309S ≤0.08 22.0~24.0 12.0~15.0 - -
310S 310S ≤0.08 24.0~26.0 19.0~22.0 - -
316 316 ≤0.08 16.0~18.0 10.00~14.0 2.00~3.00 -
316L 316L ≤0.03 16.0~18.0 12.00~16.0 2.00~3.00 -
321 321 ≤0.03 17.0~19.0 9.00~13.00 - Ti 5 X C%
XM15J1 XM15J1 ≤0.08 15.0~20.0 11.5~15.0 - Si 3.5~5.0
DUPLEX 329J3L 329J3L ≤0.03 21.0~24.0 4.5~6.5 - N 0.08~2.0
F
E
R
R
I
R
E		 409 409 ≤0.08 10.5~11.75 - - TI 6 X C%~0.75
409L 409L ≤0.03 10.5~11.75 - - TI 6 X C%~0.75
410L 410L ≤0.03 11.0~13.5 - - -
430LX 430LX ≤0.03 16.0~19.0 - - Ti or Nb 0.1~1.0
430 430 ≤0.12 16.0~18.0 - - -
430Ti 430Ti ≤0.03 16.0~21.0 - - Ti 0.2~0.5
430J1L 430J1L ≤0.025 16.0~20.0 - - Nb 8 X (C%+n%)~0.8
Cu 0.30~0.80
- 439M ≤0.03 18.0~19.0 - - Nb 0.3~1.0
436L 436L ≤0.025 16.0~19.0 - 0.75~1.25 Ti, Nb, Zr
8 X (c%+N%)~0.8
444 444 ≤0.025 17.0~20.0 - 1.75~2.50 Ti, Nb, Zr
8 X (c%+N%)~0.8
445 445 ≤0.015 21.0~23.0 - 1.7~2.4 Ti ≤ 0.30
- 446M ≤0.015 25.0~28.0 - - Ti ≤ 0.30
MARTEN
SITE		 410 410 ≤0.015 11.5~13.5 - - -
420J1 420J1 0.16~0.25 12.0~14.0 - - -
420J2 420J2 0.26~0.4 12.0`14.0 - - -
 
Mechanical Properties
Classification Grade Heat Processing Conditions Internal Strength
(N/㎟)		 Tensile Strength
(N/㎟)		 Elongation Rate
(%)		 Hardness
KS(JIS) POSCO HB HRB HV
A
U
S
T
E
N
I
T
E		 301 301 S ≥205 ≥515 ≥40 ≤207 ≤95 ≤218
301L 301L S ≥220 ≥550 ≥45 ≤187 ≤90 ≤200
304 304 S ≥205 ≥515 ≥40 ≤197 ≤90 ≤200
304J1 304J1 S ≥155 ≥450 ≥40 ≤197 ≤90 ≤200
304L 304L S ≥170 ≥485 ≥40 ≤218 ≤90 ≤200
304N1 304N1 S ≥275 ≥550 ≥35 ≤248 ≤90 ≤220
304N2 304N2 S ≥345 ≥690 ≥35 ≤187 ≤100 ≤260
305 305 S ≥170 ≥485 ≥40 ≤187 ≤90 ≤200
- 305EG S ≥175 ≥480 ≥40 ≤187 ≤90 ≤200
309S 309S S ≥205 ≥515 ≥40 ≤187 ≤90 ≤200
310S 310S S ≥205 ≥515 ≥40 ≤187 ≤90 ≤200
316 316 S ≥205 ≥515 ≥40 ≤187 ≤90 ≤200
316L 316L S ≥175 ≥485 ≥40 ≤187 ≤90 ≤200
321 321 S ≥205 ≥515 ≥40 ≤187 ≤90 ≤200
XM15J1 XM15J1 S ≥205 ≥520 ≥40 ≤207 ≤95 ≤218
DUPLEX 329J3L 329J3L S ≥450 ≥620 ≥18 ≤305 - ≤320
F
E
R
R
I
R
E		 409 409 A ≥175 ≥360 ≥22 ≤162 ≤80 ≤175
409L 409L A ≥175 ≥360 ≥25 ≤162 ≤80 ≤175
410L 410L A ≥195 ≥360 ≥22 ≤183 ≤88 ≤200
430LX 430LX A ≥175 ≥360 ≥22 ≤183 ≤88 ≤200
430 430 A ≥205 ≥450 ≥22 ≤183 ≤88 ≤200
430Ti 430Ti A ≥205 ≥420 ≥25 ≤162 ≤80 ≤175
430J1L 430J1L A ≥205 ≥390 ≥22 ≤192 ≤90 ≤200
- 439M A ≥205 ≥400 ≥22 ≤192 ≤90 ≤200
436L 436L A ≥245 ≥410 ≥20 ≤217 ≤96 ≤230
444 444 A ≥245 ≥410 ≥20 ≤217 ≤96 ≤230
445 445 A ≥245 ≥410 ≥20 - - ≤230
- 446M A ≥275 ≥510 ≥20 ≤201 ≤95 ≤210
MARTEN
SITE		 410 410 A ≥205 ≥450 ≥20 ≤201 ≤93 ≤210
420J1 420J1 A ≥225 ≥520 ≥18 ≤223 ≤97 ≤234
420J2 420J2 A ≥225 ≥540 ≥18 ≤235 ≤99 ≤247
 
Physical Properties & Similer Specificarions
Classification Grade Physical Properties Similar Specifications
KS(JIS) POSCO J/g℃ Elastic Coefficient
x103N/㎟		 Thermal Expansion Coefficient
x10-6㎝/㎝/℃
(20~100℃)		 Thermal Conductivity
W/mㆍ℃
(100℃)		 UNS AISI DIN
A
U
S
T
E
N
I
T
E		 301 301 0.50 194 16.9 16.3 S30100 301 X12CrNi 17 7
301L 301L 0.50 194 16.9 16.3     X2CrNi 18 7
304 304 0.50 194 17.3 16.3 S30400 304 X5CrNi 18 10
304J1 304J1 0.50 194 17.3 16.3      
304L 304L 0.50 194 17.3 16.3 S30403 304L X2CrNi 19 11
304N1 304N1 0.50 194 17.3 16.3 S30451 304N  
304N2 304N2 0.50 194 17.3 16.3 S30452    
305 305 0.50 193 17.2 16.3 S30500 305 X5CrNi 18 12
- 305EG 0.50 193 17.2 16.3 S30500 305  
309S 309S 0.50 193 14.9 13.8 S30908 309S  
310S 310S 0.50 200 15.9 14.2 S301008 301S  
316 316 0.50 194 16.0 16.3 S301600 316 X5CrNiMo 17 12 2
X5CrNiMo 17 13 3
316L 316L 0.50 193 16.0 16.3 S31603 316L X2CrNiMo 17 13 2
X2CrNiMo 17 14 3
321 321 0.50 194 16.7 16.1 S32100 321 X6CrNiTi 18 10
XM15J1 XM15J1 - - - - S38100 -  
DUPLEX 329J3L 329J3L 0.48 200 11.5 16.2 S32950 329  
F
E
R
R
I
R
E		 409 409 0.46 200 6.5 24.9 S40900 409  
409L 409L 0.46 200 11.7 24.9      
410L 410L 0.46 200 9.9 25.1 S41008 410S  
430LX 430LX 0.46 196 10.5 26.4      
430 430 0.46 200 10.4 26.4 S43000 430 X6Cr 17
430Ti 430Ti     11.5        
430J1L 430J1L 0.46 200 10.4 25.0      
- 439M 0.46 200 10.5 26.4      
436L 436L 0.46 200 10.4 25.0 S43600 436  
444 444 0.46 206 10.4 25.9 S44400 444  
445 445   200 10.0        
- 446M 0.43 200 9.9 20.9 S44627 446  
MARTEN SITE 410 410 0.46 202 9.9 24.9 S41000 410 X10Cr 13
420J1 420J1 0.46 202 10.3 23.8 S42000 420 X10Cr 13
420J2 420J2 0.46 202 10.3 23.8 S42000 420S X10Cr 13
 
Wilding Zone & Quality
Classification Outside bead removal Inside & Outside Bead Removal Inside & Outside Welding Drawing Tube
Shapes of Welding Zone
Characteristics Ordinary pipe manufactured by the Tig, plasma welding Inside bead remove cold rolling Inside & Outside Welding at the same time High quality tube by Inside & Outside drawing
Production Process Forming
↓
Welding
↓
Annealing
↓
Straightening
↓
End-Facing
↓
Pickling		 Forming
↓
Welding
↓
Inside Bead Rolling
↓
Annealing
↓
Straightening
↓
Cutting
↓
End-Facing
↓
Pickling
 Forming
↓
Inside & Outside Welding
↓
Annealing
↓
Straightening
↓
End-Facing
↓
Pickling		 Forming
↓
Welding
↓
Annealing
↓
Cold Drawing
↓
Degreasing
↓
Annealing
↓
Straightening
↓
End-Facing
↓
Pickling
Applications For General piping material and boiler, heat exchanger For Sanitary boiler, heat exchanger For general piping material, fittings For boiler,
heat exchanger,
machine structural