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ASTM A 333M-88a / ASME SA 333 

SEAMLESS AND WELDED STEEL PIPE FOR LOW TEMPERATURE SERVICE

This standard is issued under the fixed designation A 333/A 333M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon ( ε) indicates an editorial change since the last revision or reapproval. 


1.Scope 

1.1 This specification covers nominal (average) wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. Sveral graes of ferritic steel are included as listed in Table 1. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect in low-temperature impact properties.

1.2 Supplementary Requirement S1 of an optional nature is provided. This shall apply only when specified by the purchaser.

1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "M" designation of this specification is specified in the order. 

NOTE 1?The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as "nominal diameter," "size," and "nominal size."

Grade  Remarks (Similar to JIS) possibility
temperature
Gr. 1 Impact Test(J)2mmV
Gr. 3  18
Gr. 4  18
Gr. 6  18
Gr. 7  18
Gr. 8  18
Gr. 9  18
Gr. 10  18





Chemical Requirements 

Element Composition, %
Grade 1 Grade 3 Grade 4 Grade 6 Grade 7 Grade 8 Grade 9 Grade 10 Grade 11
Carbon,max 0.30 0.19 0.12 0.30 0.19 0.13 0.20 0.20 0.10
Manganese 0.40- 0.31-0.64 0.50-1.06 0.29-1.06 0.90max 0.90max 0.40-1.06 1.15-1.50 0.60max
Phosphorus,max 1.06 0.025 0.025 0.025 .025 0.025 0.025 0.035 0.025
Sulfur,max 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.015 0.025
Silicon 0.025 0.18-0.37 0.08-0.37 0.10min 0.13-0.32 0.13-0.32 ... 0.10-0.35 0.35max
Nickel ... 0.025 0.47-0.98 ... 2.03-2.57 8.40-9.60 1.60-2.24 0.25max 35.0-37.0
Chromium ... ... 0.44-1.01 ... ... ... ... 0.15max 0.50max
Copper ... ... 0.40-0.75 ... ... ... 0.75-1.25 0.15max ...
Aluminum ... ... 0.04-0.30 ... ... ... ... 0.06max ...
Vanadium,max ... ... ... ... ... ... ... 0.12 ...
Columbium,max ... ... ... ... ... ... ... 0.05 ...
Molybdenum,max ... ... ... ... ... ... ... 0.05 0.50max
Cobalt ... ... ... ... ... ... ... ... 0.50max


For each reduction of 0.01% carbon below 0.30%,
an increase of 0.05% manganese above 1.06^ would be permitted to a maximum of 1.35% manganese. 


Stress Relieving of Test Pieces


Metal TemperatureA,B Minimum Holding Time,
h/in[min/mm] of
Thickness
GRADES 1, 3, 6, 7, and 10 Grade 4C
? ? ? ?
1100 600 1150 620 1 [2.4]
1050 565 1100 600 2 [4.7]
1000 540 1050 565 3 [7.1]



Product Analysis 

7.1 At the request of the purchaser, an analysis of one billet or two of flat-rolled stock from each heat or 
of two pipes from each lot shall be amde by the manufacturer. A lot of pipe shall consist of the following :

NPS Designator Length of Pipe in Lot
Under 2 400 or fraction thereof
2 to 6 200 or fraction thereof
Over 6 100 or fraction thereof

The results of these analyses shall be reprted to the purchaser or the purchaer's representative and shall 
conform to the requriements specified. If the analysis of one of the tests specified in 7.1 does not conform 
to the requirements specified, an analysis of each billet or pipe from the same heat or lot may be made, 
and all billets or pipe conforming to the requirements shall be accepted. 

Tensile Requirements

Grade 1 Grade 3 Grade 4 Grade 6 Grade 7 Grade 8 Grade 9 Grade 10 Grade 11
psi MPa psi MPa psi MPa psi MPa psi MPa psi MPa psi MPa psi MPa psi MPa
Tensile strength, min... 55 000 380 65 000 450 60 000 415 60 000 415 65 000 450 100 000 690 63 000 435 80 000 550 65 000 450
Yield strength, min... 30 000 205 35 000 240 35 000 240 35 0000 240 35 000 240 75 0000 515 46 000 315 65 000 450 35 000 240
  Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Elongation in 2 in. or 50 mm.(or 4D), min,%; Basic minimum elongation for walls 5/16 in.[8mm] and over in thickness, strip tests, and for all small sizes tested in full section 35 25 30 20 30 16.5 30 16.5 30 22 22 ... 28 ... 22 ... 18
When standard round 2-in. or 50-mm gage length or proportionally smaller size test specimen with the gage length equal to 4D(4 times the diameter) is used 28 20 22 14 22 12 22 12 22 14 16 ... ... ... 16 ...
For strip tests, a deductioin for each 1/32 in[0.8mm] decrease in wall thickness below 5/16 in.[8mm] from the basic minimum elongation of the following percentage 1.75 1.25 1.50 1.00 1.50 1.00 1.50 1.00 1.50 1.00 1.25 ... 1.50 ... 1.25 ...


A) Elongation of Grade 11 is for all walls and small sizes tested in full section.
B) The following table gives the calculated minimum values 

Elongation in 2 in. or 50mm, min, %C
Grade 1 Grade 3 Grade 4 Grade 6 Grade 7 Grade 8 Grade 9 Grade 10
in. mm Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
Longi-
tudinal
Trans-
verese
5/16(0.32) 8 35 25 30 20 30 16 30 16 30 22 22 ... 28 ... 22 ...
9/32(0.281) 7.2 33 24 28 19 28 15 28 15 28 21 21 ... 26 ... 21 ...
1/4(0.250) 6.4 32 23 27 18 27 15 27 15 27 20 20 ... 25 ... 20 ...
1/32(0.219) 5.6 30 ... 26 ... 26 ... 26 ... 26 ... 18 ... 24 ... 18 ...
3/16(0.188) 4.8 28 ... 24 ... 24 ... 24 ... 24 ... 17 ... 22 ... 17 ...
5/32(0.156) 4 26 ... 22 ... 22 ... 22 ... 22 ... 16 ... 20 ... 16 ...
1/8(0.125) 3.2 25 ... 21 ... 21 ... 21 ... 21 ... 15 ... 19 ... 15 ...
3/32(0.094) 2.4 23 ... 20 ... 20 ... 20 ... 20 ... 13 ... 18 ... 13 ...
1/16(0.062) 1.6 21 ... 18 ... 18 ... 18 ... 18 ... 12 ... 16 ... 12 ...


Caluculated elongation requirements shall be rounded to the nearest whole number. 
NOTE - The preceding table gives the computed mimum elongation values for each 1/32-in. [0.80mm] 
decrease in wall thickness. 

Where the wall thickness lies between two values shown avoce, the minimum elongation value is 
determined by the following equation : 

Grade Direction of Test Equation
1 Longitudinal E = 56t + 17.50 [E = 2.19t + 17.50]
Transverese E = 40t + 12.50 [E = 1.56t + 12.50]
3 Longitudinal E = 48t + 15.00 [E = 1.87t + 15.00]
Transverese E = 32t + 10.00 [E = 1.25t + 10.00]
4 Longitudinal E = 48t + 15.00 [E = 1.87 + 15.00]
Transverese E = 32t + 6.50 [E = 1.25t + 6.50 ]
6 Longitudinal E = 48 + 15.00 [E = 1.87t + 15.00]
Transverese E = 32t + 6.50 [E = 1.25t + 6.50 ]
7 Longitudinal E = 48t + 15.00 [E = 1.87t + 15.00]
Transverese E = 32t + 11.00 [E = 1.25t + 11.00]
8 and 10 Longitudinal E = 40t + 9.50 [E = 1.56t + 9.50]
9 Longitudinal E = 48t + 13.00 [E = 13.00t + 13.00]



where: E = elongation in 2 in. or 50mm, in %, and

t = actual thickness of specimen, in.[mm] 

Impact Requirements for Grades 1, 3, 4, 6, 7, 9, and 10
 


Size of 
Specimen, mm
Minimum Average Notched Bar Impact
Value of Each Set of Three Specimens A
Minimum Notched Bar Impact
Value of On Specimen Only of a SetA
ft.lbf J ft.lbf J
10 by 10 13 18 10 14
10 by 7.5 10 14 8 11
10 by 6.67 9 12 7 9
10 by 5 7 9 5 7
10 by 3.33 5 7 3 4
10 by 2.5 4 5 3 4



A Straight line interpolation for intermediate values is permitted.


Impact Temperature 

Grade Minimum Impact Test Temperature
? ?
1 -50 -45
3 -150 -100
4 -150 -100
6 -50 -45
7 -100 -75
8 -320 -195
9 -100 -75
10 -75 -60




Impact Temperature Reduction
 


Specimen Width Along Notch or Actual Material Thickness Temperature Reduction, Degrees ColderA
in. mm ? ?
0.394 10(standard size) 0 0
0.354 9 0 0
0.315 8 0 0
0.295 7.5(3/4 std.size) 5 3
0.276 7 8 4
0.262 6.67(2/3 std.size) 10 5
0.236 6 15 8
0.197 5(1/2 std.size) 20 11
0.158 4 30 17
0.131 3.33(1/3 std.size) 35 19
0.118 3 40 22
0.099 2.5(1/4 std.size) 50 28



AStraight line interpolation for intermediate values is permitted.Material Comparison Tables (ASTM →KS, JIS, DIN, BS, NBN, NF, UNI) 

ASTMSTANDARD
UNS NO.
KOREA/JAPANES

GERMAN

BRITISH
FRENCH
ITALIAN
KS/JIS Symbol
KS/JIS Numbe
Remarks
DIN Type

DIN

Number

Materiral

Number

Remarks

B.S

Number

B.S Grade
Remarks
AFNOR Type
NF Number
Ramarks
UNI Type
UNI Number
Ramarks

A 333

Seamless and Welded Pipe for Low-Temperature Service

Grade 1 K03008 SPLT 39 / STPL 380 D3569 / G 3460 (16) TT St 41N 1.0437 WBL-680(3b) (3) TU 42 BT A49-230 C 15 5949 (6)Seamless Only
Grade 3 K31918 SPLT 46 / STPL 450 D3569 / G 3460 (16) 10 Ni 14

1.5637

WBL-680(3b) 3603 HFS 503 LT 100 CAT.2 TU 16 N 14 A49-230 (3c) 18 Ni 14 5949 Seamless Only
Grade 6 K03006 (3) TT St 45 N

1.0456

WBL-680(3b) 3603 HFS 410 LT 50 CAT.2 TU 42 BT A49-230 C 20 5949 Seamless Only
Grade 8 K81340 SPLT 70 / STPL 690 D3569 / G 3460 (16) X8 Ni 9 1.5662 WBL-680(3b) 3603 HFS 590 LT 196 CAT.2 TU Z 11 N 9 A49-230 (6) 12 X Ni 09 5949 Seamless Only



JIS Number and Corrensponding Foreign Standards

JIS
ASTM
BS
DIN
NF
ISO

Index Number

Standard Number

Grade

Type

Standard Number

Grade

Type

Standard Number

Grade

Type

Standard Number

Grade

Type

Standard Number

Grade

Type

Standard Number

Grade

Type

G3460
STPL380 (STPL39)
C
A333
Gr1
C
3608
HFS410LT50
C
           
2604/2
TS6
C
C007
         
"
CFS410LT50
C
           
2604/3
TW6
C
 
         
"
ERW410LT50
C
                   
         
"
CEW410LT50
C
                   
 
STPL440 (STPL450)
Ni
A333
Gr3
Ni
3603
HFS503
Ni
     
A49-230
TU10N14
Ni
2604/2
TS43
Ni
 
         
"
LT100
                     
         
"
CFS503
Ni
                   
         
"
LT100
                     
 
STPL690 (STPL70)
Ni
A333
Gr8
Ni
3605
HFS503
Ni
     
A49-230
TU26N9
Ni
2604/2
TS45
Ni
 
         
"
LT196
                     
         
"
CFS503
Ni
                   
         
"
LT196
                     

 

 

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