Technical Info

Flanges Chemical Composition & Mechanical Properties

Carbon Steel Flanges Chemical Composition ASTM A105, A350, A694

ASTM A105 (High-temperature carbon steel flange material)

  C Mn P S Si Cu Ni Cr Mo V
A105 – 0.60 – – 0.10 – – –    
0.35 1.05 0.035 0.040 0.35 0.40 0.40 0.30 0.12 0.08

ASTM A350 (Low-Temperature carbon steel flange material)

  C% Mn% Si% S% P% Cr% Ni%
A350 LF1 0.30 max 0.6/1.35 .15/.30 .040 max .035 max 0.30 max 0.40 max
A350 LF2 0.30 max 0.6/1.35 .15/.30 .040 max .035 max 0.30 max 0.40 max
A350 LF3 0.20 max 0.9 .20/.35 .040 max .035 max 0.30 max 3.3/3.7

ASTM A694 (High-yield carbon steel flanges)

  C Mn P S Si
ASTM A694 F42 0.26-0.265 1.60-1.64 0.025-0.030 0.025-0.030 0.15-0.35
ASTM A694 F52 0.26-0.265 1.60-1.64 0.025-0.030 0.025-0.030 0.15-0.35
ASTM A694 F60 0.26-0.265 1.60-1.64 0.025-0.030 0.025-0.030 0.15-0.35
ASTM A694 F65 0.26-0.265 1.60-1.64 0.025-0.030 0.025-0.030 0.15-0.35

Mechanical Properties A105, A350, A694

ASTM A105 (High-temperature carbon steel flange material)

Property ASTM A105 ASTM A350-LF2
Tensile Strength Min, psi 70,000 70,000-95,000
Tensile Strength Min, N/mm² 485 485-655
Yield Strength Min, psi 36,000 36,000
Yield Strength Min, N/mm² 250 250
Elongation (%) 22 22
Reduction of Area (%) 30 30
Hardness, maximum 187 15/12 ft-lbs
CVN at -50℉ 20/16 joules

ASTM A694 (High-yield carbon steel flanges)

ASTM A694 Flange Material Grade Min Yield Strength (0.2 % Offset), in ksi [MPa] MinTensile Strength Elongation in 2 in. or 50 mm, min %
in ksi [MPa]
A694 F42 42 [290] 60 [415] 20
A694 F46 46 [315] 60 [415] 20
A694 F48 48 [330] 62 [425] 20
A694 F50 50 [345] 64 [440] 20
A694 F52 52 [360] 66 [455] 20
A694 F56 56 [385] 68 [470] 20
A694 F60 60 [415] 75 [515] 20
A694 F65 65 [450] 77 [530] 20
A694 F70 70 [485] 82 [565] 18

Stainless Steel Chemical Composition ASTM A182 F304/F316/F321

ASTM A182 Stainless Steel Flanges Materials Composition, %
ASTM A182 GRADE C Mn P S Si Ni Cr Mo Nb Ti Others
F304(1) 0.08 2.0 0.045 0.030 1.0 8.0-11.0 18.0-20.0        
F304H 0.04-0.10 2.0 0.045 0.030 1.0 8.0-11.0 18.0-20.0        
F304L(1) 0.030 2.0 0.045 0.030 1.0 8.0-13.0 18.0-20.0        
F304N(2) 0.08 2.0 0.045 0.030 1.0 8.0-10.5 18.0-20.0        
F304LN(2) 0.030 2.0 0.045 0.030 1.0 8.0-10.5 18.0-20.0        
F309H 0.04-0.10 2.0 0.045 0.030 1.0 12.0-15.0 22.0-24.0        
F310 0.25 2.0 0.045 0.030 1.0 19.0-22.0 24.0-26.0        
F310H 0.04-0.10 2.0 0.045 0.030 1.0 19.0-22.0 24.0-26.0        
F310MoLN 0.030 2.0 0.030 0.015 0.40 21.0-23.0 24.0-26.0 2.0-3.0     N 0.10-0.16
F316 0.08 2.0 0.045 0.030 1.0 10.0-14.0 16.0-18.0 2.0-3.0      
F316H 0.04-0.10 2.0 0.045 0.030 1.0 10.0-14.0 16.0-18.0 2.0-3.0      
F316L(1) 0.030 2.0 0.045 0.030 1.0 10.0-15.0 16.0-18.0 2.0-3.0      
F316N(2) 0.08 2.0 0.045 0.030 1.0 11.0-14.0 16.0-18.0 2.0-3.0      
F316LN(2) 0.030 2.0 0.045 0.030 1.0 11.0-14.0 16.0-18.0 2.0-3.0      
F316Ti 0.08 2.0 0.045 0.030 1.0 10.0-14.0 16.0-18.0 2.0-3.0   (3) N 0.10 max
F317 0.08 2.0 0.045 0.030 1.0 11.0-15.0 18.0-20.0 3.0-4.0      
F317L 0.030 2.0 0.045 0.030 1.0 11.0-15.0 18.0-20.0 3.0-4.0      
F321 0.08 2.0 0.045 0.030 1.0 9.0-12.0 17.0-19.0     (4)  
F321H 0.04-0.10 2.0 0.045 0.030 1.0 9.0-12.0 17.0-19.0     (5)  
F347 0.08 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (6)    
F347H 0.04-0.10 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (7)    
F348 0.08 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (6)   Co 0.20
Ta 0.10
F348H 0.04-0.10 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (7)   Co 0.20
Ta 0.10

Stainless Steel Mechanical Properties ASTM A182 F304/F316/F321

ASTM A182 Grade Minimum Tensile Strength
in MPa		 Minimum Yield point
in Mpa		 Minimum Elongation
in %		 Minimum Reduction of in
min, %
ASTM A182 F304 515 205 30 50
ASTM A182 F304L 485 170 30 50
ASTM A182 F316 515 205 30 50
ASTM A182 F316L 485 170 30 50
ASTM A182 F321 515 205 30 50

Duplex Steel Flange Chemical Composition

ASTM A182 Duplex and Super Duplex

%

Duplex 2205
(ASTM A182 UNS S31803 – UNS S32205)

Super Duplex
ASTM A182 UNS S32750 – 32760)

C

0-0.03

0.03 max

Mn

2.0

1.5

Si

1.0

0.8

P

0-0.03

0.035

S

0-0.02

0.02

Cr

21-23

24-26

Mo

2.5-3.5

3.0-5.0

Ni

4.5-6.5

5.5-8.0

N

0.08-0.2

0.2-0.35

Cu

–

0.5-3.0

Duplex Steel Flange

Mechanical Properties ASTM A182 Duplex and Super Duplex

Mechanical Properties

Duplex 2205
(ASTM A182 UNS S31803 – UNS S32205)

Super Duplex
ASTM A182 UNS S32750 – 32760)

Tensile Strength (in MPa)

620

770

Proof Stress 0.2% (in MPa)

450

550

A5 Elongation (in %)

25

25

Physical Attribute

Duplex 2205
(ASTM A182 UNS S31803 – UNS S32205)

Super Duplex
ASTM A182 UNS S32750 – 32760)

Density (g.cm3)

7.805

7.810

Modulus of Elasticity (GPa)

200

205

Electrical Resistivity (Ω.m)

0.085×10-6

0.085×10-6

Thermal Conductivity (W/m.K)

19 at 100°C

17 at 100°C

Thermal Expansion (m/m.K)

13.7×10-6 to 100°C

13.5×10-6 to 200°C

Buttweld Pipe Fittings

ASTM A234 Chemical Composition (Carbon Steel)

Chemical composition of ASTM A234 Carbon and Alloy Steel Fittings
Grade C Mn P max S max Si Cr Mo Ni Cu Others
WPB
(1,2,3,4,5)		 0.30
max		 0.29-1.06 0.050 0.058 0.10
min		 0.40
max		 0.15
max		 0.40
max		 0.40
max		 V 0.08
max
WPC
(2,3,4,5)		 0.35
max		 0.29-1.06 0.050 0.058 0.10
min		 0.40
max		 0.15
max		 0.40
max		 0.40
max		 V 0.08
max
WP1 0.28
max		 0.30-0.90 0.045 0.045 0.10-0.50   0.44-0.65      
WP12 CL1 0.05-
0.20		 0.30-0.80 0.045 0.045 0.60
max		 0.80-1.25 0.44-0.65      
WP12 CL2 0.05-
0.20		 0.30-0.80 0.045 0.045 0.60
max		 0.80-1.25 0.44-0.65      
WP11 CL1 0.05-
0.15		 0.30-0.60 0.030 0.030 0.50-1.00 1.00-1.50 0.44-0.65      
WP11 CL2 0.05-
0.20		 0.30-0.80 0.040 0.040 0.50-1.00 1.00-1.50 0.44-0.65      
WP11 CL3 0.05-
0.20		 0.30-0.80 0.040 0.040 0.50-1.00 1.00-1.50 0.44-0.65      
WP22 CL1 0.05-
0.15		 0.30-0.60 0.040 0.040 0.50
max		 1.90-2.60 0.87-1.13      
WP22 CL3 0.05-
0.15		 0.30-0.60 0.040 0.040 0.50
max		 1.90-2.60 0.87-1.13      
WP5 CL1 0.15
max		 0.30-0.60 0.040 0.030 0.50
max		 4.0-6.0 0.44-0.65      
WP5 CL3 0.15
max		 0.30-0.60 0.040 0.030 0.50
max		 4.0-6.0 0.44-0.65      
WP9 CL1 0.15
max		 0.30-0.60 0.030 0.030 1.00
max		 8.0-10.0 0.90-1.10      
WP9 CL3 0.15
max		 0.30-0.60 0.030 0.030 1.00
max		 8.0-10.0 0.90-1.10      
WPR 0.20
max		 0.40-1.06 0.045 0.050       1.60-
2.24		 0.75-1.25  
WP91 0.08-
0.12		 0.30-0.60 0.020 0.010 0.20-0.50 8.0-9.5 0.85-1.05 0.40
max		   V 0.18- 0.25
Nb 0.06-0.10
N 0.03-0.07
Al 0.02 max(6)
Ti 0.01 max(6)
Zr 0.01 max(6)
WP911 0.09-
0.13		 0.30-0.60 0.020 0.010 0.10-0.50 8.0-9.5 0.90-1.10 0.40
max		   V 0.18-0.25
Nb 0.060-0.10
N 0.04-0.09
Al 0.02 max(6)
B 0.0003-0.006
W 0.90-1.10
Ti 0.01 max(6)
Zr 0.01 max(6)

ASTM A234 Mechanical Properties ( Carbon Steel )

Tensile and Yield Strength ASTM A234 for Carbon and Alloy Steel Fittings WPB WPC,
WP11-CL2		 WP11-CL1,
WP22-CL1
WP5-CL1
WP9-CL1		 WP11-CL3,
WP22-CL3
WP5-CL3
WP9-CL3		 WP91
Tensile strength, minimum unless a range is given ksi (MPa) 60 (415) 70 (485) 60 (415) 75 (520) 90 (620)
Yield strength, min ksi (MPa) (0.2% offset or 0.5% extension under-load) 35 (240) 40 (275) 30 (205) 45 (310) 60 (415)

Stainless Steel Pipe Fittings Mechanical Properties

MECHANICAL PROPERTIES
Grade Tensile Yield %Age Hardness (Max) -
- Strength Mpa, (Min) Strength Elongation - -
- - Mpa, (Min) in 50mm - -
- - - gauge length min BHN Rb
301 515 205 40 217 95
304 515 205 40 201 92
304L 485 170 40 201 92
310S 515 205 40 217 95
316 515 205 40 217 95
316L 485 170 40 217 95
317 515 205 35 217 95
317L 515 205 40 217 95
321 515 205 40 217 95
347 515 205 40 201 92
409 380 170 20 179 88
409M 430 275 20 187 90
410S 415 205 22 183 89
410 450 205 20 217 89
420 700( max ) - 15 217 95
430 450 205 22 183 89
JSL AUS 515 205 40 217 95
JS- 203 515 205 40 217 95
301M 515 205 40 217 95

Carbon Steel Pipe Fittings Chemical Composition

AISI
OR SAE		 C MN P MAX S MAX
1005* .06 max .35 max .040 .050
1006* .08 max .25/.40 max .040 .050
1008 .10 max .30/.50 max .040 .050
1010 .08/.13 max .30/.60 max .040 .050
1011* .08/.13 max .60/.90 max .040 .050
1012 .10/.15 max .30/.60 max .040 .050
1013* .11/.16 .50/.80 .040 .050
1015 .13/.18 .30/.60 .040 .050
1016 .13/.18 .60/.90 .040 .050
1017 .15/.20 .30/.60 .040 .050
1018 .15/.20 .60/.90 .040 .050
1019 .15/.20 .70/1.00 .040 .050
1020 .18/.23 .30/.60 .040 .050
1021 .18/.23 .60/.90 .040 .050
1022 .18/.23 .70/1.00 .040 .050
1023 .20/.25 .30/.60 .040 .050
1025 .22/.28 .30/.60 .040 .050
1026 .22/.28 .60/.90 .040 .050
1029 .25/.31 .60/.90 .040 .050
1030 .28/.34 .60/.90 .040 .050
1035 .32/.38 .60/.90 .040 .050
1037 .32/.38 .70/1.00 .040 .050
1038 .35/.42 .60/.90 .040 .050
1039 .37/.44 .70/1.00 .040 .050
1040 .37/.44 .60/.90 .040 .050
1042 .40/.47 .60/.90 .040 .050
1043 .40/.47 .70/1.00 .040 .050
1044 .43/.50 .30/.60 .040 .050
1045 .43/.50 .60/.90 .040 .050
1046 .43/.50 .70/1.00 .040 .050
1049 .46/.53 .60/.90 .040 .050
1050 .48/.55 .60/.90 .040 .050
1053 .48/.55 .70/1.00 .040 .050
1055 .50/.60 .60/.90 .040 .050
1059* .55/.65 .50/.80 .040 .050
1060 .55/.65 .60/.90 .040 .050
1064* .60/.70 .50/.80 .040 .050
1065* .60/.70 .60/.90 .040 .050
1069* .65/.75 .40/.70 .040 .050
1070 .65/.75 .60/.90 .040 .050
1074* .70/.80 .50/.80 .040 .050
1075* .70/.80 .40/.70 .040 .050
1078 .72/.85 .30/.60 .040 .050
1080 .75/.88 .60/.90 .040 .050
1084 .80/.93 .60/.90 .040 .050
1085* .80/.93 .70/1.00 .040 .050
1086* .80/.93 .30/.50 .040 .050
1090 .85/.98 .60/.90 .040 .050
1095 .90/1.03 .30/.50 .040 .050

UNS S31803, UNS S32205 Chemical Composition (Duplex Steel)

Grade C Mn Si P S Cr Mo Ni N Fe
S31803 0.030 max 2.00 max 1.00 max 0.030 max 0.020 max 22.0 – 23.0 3.0 – 3.5 4.50 – 6.50 0.14 – 0.20 63.72 min
S32205 0.030 max 2.00 max 1.00 max 0.030 max 0.020 max 21.0 – 23.0 2.50 – 3.50 4.50 – 6.50 0.8 – 0.20 63.54 min

UNS S31803, UNS S32205 Mechanical Properties (Duplex Steel)

Grades Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
S31803 / S32205 7.805 0.285 1420 – 1465 2588 – 2669

UNS S32750, UNS S32760 Chemical Composition (Super Duplex Steel)

Grade C Mn Si P S Cr Mo Ni N Fe
S 32750 0.030 max 1.20 max 0.80 max 0.035 max 0.020 max 24.00 – 26.00 3.00 – 5.00 6.00 – 8.00 0.24 – 0.32 58.095 min
S 32760 0.05 max 1.00 max 1.00 max 0.030 max 0.010 max 24.00 – 26.00 3.00 – 4.00 6.00 – 8.00 0.20 – 0.30 57.61 min

UNS S32750, UNS S32760 Mechanical Properties (Super Duplex Steel)

Grades Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
S32750 / S32760 7.8 0.281 1350 2460

Forged Fitting

Stainless Steel fittings ASTM A182 (forged Fitting)

ASTM A182 Forged Fittings Materials in %
A182 Grade C Mn P S Si Ni Cr Mo Nb Ti Others
F304(1) 0.08 2.0 0.045 0.030 1.0 8.0-11.0 18.0-20.0        
F304H 0.04-0.10 2.0 0.045 0.030 1.0 8.0-11.0 18.0-20.0        
F304L(1) 0.030 2.0 0.045 0.030 1.0 8.0-13.0 18.0-20.0        
F304N(2) 0.08 2.0 0.045 0.030 1.0 8.0-10.5 18.0-20.0        
F304LN(2) 0.030 2.0 0.045 0.030 1.0 8.0-10.5 18.0-20.0        
F309H 0.04-0.10 2.0 0.045 0.030 1.0 12.0-15.0 22.0-24.0        
F310 0.25 2.0 0.045 0.030 1.0 19.0-22.0 24.0-26.0        
F310H 0.04-0.10 2.0 0.045 0.030 1.0 19.0-22.0 24.0-26.0        
F310MoLN 0.030 2.0 0.030 0.015 0.40 21.0-23.0 24.0-26.0 2.0-3.0     N 0.10-0.16
F316 0.08 2.0 0.045 0.030 1.0 10.0-14.0 16.0-18.0 2.0-3.0      
F316H 0.04-0.10 2.0 0.045 0.030 1.0 10.0-14.0 16.0-18.0 2.0-3.0      
F316L(1) 0.030 2.0 0.045 0.030 1.0 10.0-15.0 16.0-18.0 2.0-3.0      
F316N(2) 0.08 2.0 0.045 0.030 1.0 11.0-14.0 16.0-18.0 2.0-3.0      
F316LN(2) 0.030 2.0 0.045 0.030 1.0 11.0-14.0 16.0-18.0 2.0-3.0      
F316Ti 0.08 2.0 0.045 0.030 1.0 10.0-14.0 16.0-18.0 2.0-3.0   (3) N 0.10 max
F317 0.08 2.0 0.045 0.030 1.0 11.0-15.0 18.0-20.0 3.0-4.0      
F317L 0.030 2.0 0.045 0.030 1.0 11.0-15.0 18.0-20.0 3.0-4.0      
F321 0.08 2.0 0.045 0.030 1.0 9.0-12.0 17.0-19.0     (4)  
F321H 0.04-0.10 2.0 0.045 0.030 1.0 9.0-12.0 17.0-19.0     (5)  
F347 0.08 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (6)    
F347H 0.04-0.10 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (7)    
F348 0.08 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (6)   Co 0.20
Ta 0.10
F348H 0.04-0.10 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (7)   Co 0.20
Ta 0.10
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