Material Specifications

Stainless Steel Welding Fittings

STAINLESS STEEL WELDING FITTINGS
GRADE UNS DESIGNATION FITTING SPECIFICATION CHEMICAL REQUIREMENTS % - ( Maximum unless otherwise indicated )
C Mn P S Si Ni Cr MO Ti N Cu OTHER
WP304/304L S30400/S30403 SA/A403 0.030 2.00 0.045 0.030 1.00 8.00-11.00 18.0-20.0          
WP304/304H S30400/S30409 SA/A403 0.04-0.08 2.00 0.045 0.030 1.00 8.00-11.00 18.0-20.0          
WP304L S30403 SA/A403 0.030 2.00 0.045 0.030 1.00 8.00-12.00 18.0-20.0          
WP316/316L S31600/S31603 SA/A403 0.030 2.00 0.045 0.030 1.00 10.0-14.0 16.0-18.0 2.00 - 3.00        
WP316/316H S31600/S31609 SA/A403 0.04-0.08 2.00 0.045 0.030 1.00 10.0-14.0 16.0-18.0 2.00 - 3.00        
WP316L S31603 SA/A403 0.030 2.00 0.045 0.030 1.00 10.0-14.0 16.0-18.0 2.00 - 3.00        
WP309 S30900 SA/A403 0.20 2.00 0.045 0.030 1.00 12.0 - 15.0 22.0 - 24.0          
WP310 S31000 SA/A403 0.08 2.00 0.045 0.030 1.00 19.0-22.0 24.0 - 26.0          
WP317L S31703 SA/A403 0.030 2.00 0.045 0.030 1.00 11.0-15.0 18.0-20.0 3.00 - 4.00        
WP321/321H S32100/S32109 SA/A403 .040 - .080 2.00 0.045 0.030 1.00 9.0-12.0 17.0-19.0   B* ,C*      
WP347/347H S34700/S34709 SA/A403 .040-.080 2.00 0.045 0.030 1.00 9.0-12.0 17.0-20.0         D* ,E*
WP254SMO S31254 SA/A403 0.020 1.00 0.030 0.010 0.80 17.5-18.5 19.5-20.5 6.0 - 6.5   0.18 - 0.22 0.50-1.00  
WP2205 S31803 SA/A815 0.030 2.00 0.030 0.020 1.0 4.5 - 6.5 21.0-23.0 2.5 - 3.5   0.08 - 0.20    

NOTES:

B* - Grade 321 the titanium content shall be not less than five times the carbon content plus nitrogen and not more than 0.70%.
C* - Grade 321H the titanium content shall be not less than four times the carbon content plus nitrogen and not more than 0.70%.
D* - Grade 347 the columbium plus tantalum content shall be not less than ten times the carbon content and not more than 1.10%.
E* - Grade 347H the columbium plus tantalum content shall not be less than eight times the carbon content and not more than 1.00%. Long - longitudinal Tran - transversal

 

 

STAINLESS STEEL WELDING FITTINGS
GRADE UNS DESIGNATION FITTING SPECIFICATION PHYSICAL REQUIREMENTS
YIELD  STRENGTH (PSI) TENSILE STRENGTH (PSI) ELONGATION (%)
LONG TRAN
WP304/304L S30400/S30403 SA/A403 30,000 75,000 28 20
WP304/304H S30400/S30409 SA/A403 30,000 75,000 28 20
WP304L S30403 SA/A403 25,000 70,000 28 20
WP316/316L S31600/S31603 SA/A403 30,000 75,000 28 20
WP316/316H S31600/S31609 SA/A403 30,000 75,000 28 20
WP316L S31603 SA/A403 25,000 70,000 28 20
WP309 S30900 SA/A403 30,000 75,000 28 20
WP310 S31000 SA/A403 30,000 75,000 28 20
WP317L S31703 SA/A403 30,000 75,000 28 20
WP321/321H S32100/S32109 SA/A403 30,000 75,000 28 20
WP347/347H S34700/S34709 SA/A403 30,000 75,000 28 20
WP254SMO S31254 SA/A403 44,000 94,000 -119,000 28 20
WP2205 S31803 SA/A815 65,000 90,000   20

 

 

 

Nickel And Nickel Alloy Welding Fittings

STAINLESS STEEL WELDING FITTINGS
GRADE UNS DESIGNATION FITTING SPECIFICATION CHEMICAL REQUIREMENTS (%) ( Maximum unless otherwise indicated )
Ni Cu Cr Fe Mn C Si S Al P Mo N Cb+Ta Ti
WPN         (200) N02200 SB/B366 99.0 min 0.25   0.40 0.35 0.15 0.35 0.01            
WPNL       (201) N02201 SB/B366 99.0 min 0.25   0.40 0.35 0.02 0.35 0.01            
WPNC      (400) N04400 SB/B366 63.0 min 28.0 - 34.0   2.5 2.0 0.3 0.5 0.024            
WPNCI     (600) N06600 SB/B366 72.0 min 0.5 14.0-17.0 6.0-10.0 1.0 0.15 0.5 0.015            
WPNCMC (625) N06625 SB/B366 58.0 min 0.0 20.0-23.0 5.0 0.5 0.1 0.5 0.015 .4 0.015 8.0-10.0   3.15-4.15 0.4
WPNIC        (800) N08800 SB/B366 30-35 0.75 19.0-23.0 39.5 min 1.5 0.1 1.0 0.015 0.15-0.60          
WPNIC10   (800H) N08810 SB/B366 30-35 0.75 19.0-23.0 39.5 min 1.5 0.05-0.10 1.0 0.015 0.15-0.60         .015-0.6;
WPNIC11  (800HT) N08811 SB/B366 30-35 0.75 19.0-23.0 39.5 min 1.5 0.06-0.10 1.0 0.015 0.15-0.6,F*         0.15-0.6
WPNICMC  (825) N08825 SB/B366 38.0-46.0 1.5-3.0 19.5-23.5 22.0 min 1.0 0.05 0.5 0.03 0.2   2.5-3.5     0.6-1.2
WP6XN N08367 SB/B366 23.50 - 25.50 0.75 20.0 - 22.0 Remainder 2.00 0.030 1.00 0.030   0.040 6.00-7.00 0.18-0.25    
WP20CB N08020 SB/B366 32.0 - 38.0 3.00 - 4.00 19.0-21.0 Remainder 2.00 0.07 1.00 0.035   0.045 2.00-3.00   8 X Carbon - 1.00  

Notes : -

F* - With AL + Ti => 0.85-1.20

 

 

NICKEL AND NICKEL ALLOY WELDING FITTINGS
GRADE UNS DESIGNATION FITTING SPECIFICATION PHYSICAL REQUIREMENTS
TENSILE STRENGTH (PSI) YIELD STRENGTH (PSI) ELONG % STARTING MATERIAL NOTES
WPN      (200) N02200 SB/B366 55,000 15,000 35 5"OD & UNDER
55,000 12,000 40 OVER 5"OD
WPN      (201) N02201 SB/B366 50,000 12,000 35 5"OD & UNDER
50,000 10,000 40 OVER 5"OD
WPNC    (400) N04400 SB/B366 70,000 28,000 35 5"OD & UNDER
70,000 25,000 35 OVER 5"OD
WPNCI   (600) N06600 SB/B366 80,000 30,000 35 5"OD & UNDER SEAMLESS (HOT WORKED)
      75,000 25,000 35 OVER 5"OD SEAMLESS (HOT WORKED)
WPNCMC (625) N06625 SB/B366 120,000 60,000 30 GRADE 1
100,000 40,000 30 GRADE 2
WPNIC (800) N08800 SB/B366 65,000 25,000 30  
WPNIC10 (800H) N08810 SB/B366 65,000 25,000 30  
WPNIC11(800HT) N08811 SB/B366 65,000 25,000 30  
WPNICMC(825) N08825 SB/B366 75,000 25,000 30  
WP6XN N08367 SB/B366 100,000 45,000 30 < 3/16
      95,000 45,000 30 > 3/16
WP20CB N08020 SB/B366 80,000 35,000 30  

 

Note: If other than tubular product is used in manufacture, reference the appropriate starting material specification for chemical and physical properties.

 
 

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