HARDNESS LIMITS AND TENSILE PROPERTIES
FOR ROUND TUBINGS

Grade
Yield
Strength,
ksi (MPa),
min
Ultimate
Strength,
kai (MPa),
min
Elongation
in 2 in. or
50 mm, %,
min
RB
min
RB
max
1008
30 (207)
42 (290)
15
50
 
1010
32 (221)
45 (310)
15
55
 
1015
35 (241)
48 (331)
15
58
 
1020
38 (262)
52 (359)
12
62
 
1021
40 (276)
54 (372)
12
62
 
1025
40 (276)
56 (386)
12
65
 
1026
45 (310)
62 (427)
12
68
 
1030
45 (310)
62 (427)
10
70
 
1035
50 (345)
66 (455)
10
75
 
1040
50 (345)
66 (645)
10
75
 
1340
55 (379)
72 (496)
10
80
 
1524
50 (345)
66 (455)
10
75
 
4130
55 (379)
72 (496)
10
80
 
4140
70 (485)
90 (621)
10
85
 
Normalized Tubing
1008
23 (159)
38 (262)
30
 
65
1010
25 (172)
40 (276)
30
 
65
1015
30 (207)
45 (310)
30
 
70
1020
35 (241)
50 (345)
25
 
75
1021
35 (241)
50 (345)
25
 
78
1025
37 (255)
55 (379)
25
 
80
1026
40 (276)
60 (414)
25
 
85
1030
40 (276)
60 (414)
25
 
85
1035
45 (310)
65 (448)
20
 
88
1040
45 (310)
65 (448)
20
 
90
1340
50 (345)
70 (483)
20
 
100
1524
45 (310)
65 (448)
20
 
88
4130
50 (345)
70 (483)
20
 
100
4140
65 (448)
90 (621)
20
 
105
Sink-Drawn Tubing
1008
38 (262)
48 (331)
8
65
 
1010
40 (276)
50 (345)
8
65
 
1015
45 (310)
55 (379)
8
67
 
1020
50 (345)
60 (414)
8
70
 
1021
52 (359)
62 (428)
7
70
 
1025
55 (379)
65 (448)
7
72
 
1026
55 (379)
70 (483)
7
77
 
1030
62 (427)
70 (483)
7
78
 
1035
70 (483)
80 (552)
7
82
 
Mandrel-Drawn Tubing
1008
50 (345)
60 (414)
5
73
 
1010
50 (345)
60 (414)
5
73
 
1015
55 (379)
65 (448)
5
77
 
1020
60 (414)
70 (483)
5
80
 
1021
62 (427)
72 (496)
5
80
 
1025
65 (448)
75 (517)
5
82
 
1026
70 (483)
80 (552)
5
85
 
1030
75 (517)
85 (586)
5
87
 
1035
80 (552)
90 (621)
5
90
 
1040
80 (552)
90 (621)
5
90
 
1340
85 (586)
95 (655)
5
90
 
1524
80 (552)
90 (621)
5
90
 
4130
85 (586)
95 (655)
5
90
 
4140
100 (690)1
110 (758)1
5
90
  
Mandrel-Drawn Stress-Relieved Tubing
1008
45 (310)
55 (379)
12
68
 
1010
45 (310)
55 (379)
12
68
 
1015
50 (345)
60 (414)
12
72
 
1020
55 (379)
65 (448)
10
75
 
1021
58 (400)
68 (469)
10
75
 
1025
60 (414)
70 (483)
10
77
 
1026
65 (448)
75 (517)
10
80
 
1030
70 (483)
80 (552)
10
81
 
1035
75 (517)
85 (586)
10
85
 
1040
75 (517)
85 (586)
10
85
 
1340
80 (552)
90 (621)
10
87
 
1524
75 (517)
85 (586)
10
85
 
4130
80 (552)
90 (621)
10
87
 
4140
95 (655)
105 (724)1
10
90
 

These values are based on normal mill stress relieving temperatures. For particular applications, properties may be adjusted by negotiation between purchaser and producer.
For longitudinal strip tests, the width of the gage section shall be 1 in. (25.4 mm) and a deduction of 0.5 percentage points from the basic minimum elongation for each 1/32 in. (0.8 mm) decrease in wall thickness under 5/16 in. (7.9 mm) in wall thickness shall be permitted.