Chapter 6   Carbon & Alloy Steel - Tubular Products

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CHEMICAL COMPOSITION OF ALLOY STEEL PIPEi

 ASTM Specification

Form

C

Mn

Si

Cr

Ni

Mo

Cu

 A 333 Gr 3

W, S

0.19

0.31-0.64

0.18-0.37

3.18-3.82

            Gr 4a

W, S

0.12

0.50-1.05

0.08-0.37

0.44-1.01

0.47-0.98

0.40-0.75

            Gr 7 W, S 0.19 0.90 0.13-0.32   2.03-2.57    
            Gr 8 W, S 0.13 0.90 0.13-0.32 8.40-9.60
            Gr 9 W, S 0.20 0.40-1.06 --- 1.60-2.24 0.75-1.25
            Gr 10b W, S 0.20 1.15-1.50 0.10-0.35 0.15max 0.25 max 0.050 0.15 max
 A 714 Gr I           W, S 0.22 1.25 --- 0.20 min
            Gr IIc W, S 0.22 0.85-1.25 0.30 0.20 min
            Gr III W, S 0.23 1.35 0.30       0.20 min
            Gr IV W, S 0.10 0.60 --- 0.80-1.20 0.20-0.50 0.25-0.45
            Gr V W, S 0.16 0.40-1.01 --- 1.65 min 0.80 min
            Gr VI W, S 0.15 0.50-1.00 --- 0.30 0.40-1.10 0.10-0.20 0.30-1.00
            Gr VII W, S 0.12 0.20-0.50 0.25-0.75 0.30-1.25 0.65 0.25-0.55
            Gr VIIId W, S 0.19 0.80-1.25 0.30-0.65 0.40-0.65 0.40 0.25-0.40

 API Specification

Form

C

Mn

Si

Cr

Ni

Mo

Cu

 5CT Gr C75 type 1 W, S 0.50 1.90 0.45 e e 0.15-0.30 e
         Gr C75 type 2 W, S 0.43 1.50 0.45
         Gr C75 type 3 W, S 0.38-0.48 0.75-1.00 --- 0.80-1.10   0.15-0.25  
         Gr L80 type 1 W, S 0.43 1.90 0.45 0.25 0.35 max
         Gr N80 W, S --- --- ---
         Gr C95 W, S 0.45f 1.90 0.45        
 5CT Gr C75 S 0.15 0.30-0.60 1.00 8.0-10.0 0.50 0.90-1.10 0.25
 L80 type 9 Cr
        Gr C75, L80 type 13Cr S 0.15-0.22 0.25-1.00 1.00 12.0-14.0 0.50   0.25
 5CT Gr C90 type 1 S 0.35 1.00 --- 1.20 0.99 0.75 ---
         Gr C90 type 2 S 0.50 1.90 --- --- 0.99 --- ---
         Gr P-108, P-110 S --- --- --- --- --- --- ---
         Gr Q125 type 1 W, S 0.35 1.00 --- 1.20 0.99 0.75 ---
         Gr Q125 type 2 W, S 0.35 1.00 --- --- 0.99 --- ---
         Gr Q125 type 3 W, S 0.50 1.90 --- --- 0.99 --- ---
         Gr Q125 type 4 W, S 0.50 1.90 --- --- 0.99 --- ---
 5L Gr X56, X60g W 0.26 1.35 --- --- --- --- ---
         Gr X65g W 0.26 1.40 --- --- --- --- ---
         Gr X70 W 0.23 1.60 --- --- --- --- ---
         Gr X56, X60 S 0.26 1.35 --- --- --- --- ---
         Gr X65, X70, X80 S By agreement between purchaser and vendor.

 CSA Specification

Form

C

Mn

Si

Cr

Ni

Mo

Cu

 CAN3-Z245.1 S, W 0.26 --- 0.50 --- --- --- ---
         Gr 172 to 359h
         Gr 386 to 550h S, W 0.26 --- 0.50 --- --- --- ---

 a. Contains 0.04-0.30% Al.  b. Contains 0.66% Al, 0.12% V, 0.05% Nb.  c. Contains 0.02% V min.  d. Contains 0.02-0.10% V.  e Nickel,

 chromium and copper combined shall not exceed 0.50%.  f. Carbon content may be increased to 0.55% if product is oil quenched.
 g. Contains 0.005% Nb min., 0.02% V min., or a combination thereof at the discretion of the manufacturer.  h. May contain 0.11% Nb,
 0.06% Ti, 0.001% B and 0.020% Ce, maximums.  i. Although sulphur and phosphorus are not listed in this table due to limited space, they
 are specified; see appropriate material standard for more details.  S - Seamless; W - Welded.
 Single values are maximums, unless otherwise specified.

 

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 The Ferrous Metals Data Book

style: none; border-width: medium" colspan="9" height="17">  are specified; see appropriate material standard for more details.  S - Seamless; W - Welded.  Single values are maximums, unless otherwise specified.

 

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 The Ferrous Metals Data Book