Stainless steel polished rod

Nominal value

Rod body diameter D+0.127-0.254（+0.005-0.010）mm（in)

Length Lmm士 50mm （Lft 士 2in)

Thread nominal diameter mm（in）

mm (in） Outer thread shoulder outer diameter

Suitable sucker rod size mm (in)

29

8. ）

2438, 3353, 4877, 6707, 7315, 7925(8, 11. 16. 22. 24 , 26)

24 （15/16） PR

一

16 (5/8)

27 （1 1/16） PR

一

19 (3/4)

29

8. （11/8）rod-upset on one end

2438, 3353, 4877, 6707 , 7315, 7925 (8. 11, 16. 22 , 24 , 26)

24 (15/16 ) SR

16 (5/8)

27 (1 1/16 ) SR

19 (3/4)

32

1. （1 1/4）

3353, 4877， ,6707，7315, 7925 , 9144, 10973(11, 16, 22 . 24. 26, 30. 36)

30 (1 3/16 ) PR

一

22(7/8)

32

1. （1 1/4）rod-upset on one end

3353, 4877， ,6707，7315, 7925 , 9144, 10973(11, 16, 22 . 24. 26, 30. 36)

30 (1 3/16 ) SR

22(7/8)

38

8. ）

4877, 6707，7315, 7925. 9144. 10973(16, 22. 24, 26, 30. 36)

35（1 3/8）PR

一

25(1)

38

8. ）rod-upset on one end

4877, 6707，7315, 7925. 9144. 10973(16, 22. 24, 26, 30. 36)

40（1 9/16）SR

29(1 1/8)

Mechanical Property OF Steel Polished Rod

GRADE

Minimum Yield Strength(0.2% Residual Deformation）

Minimum Tensile Strength

Maxmum Tensile Strength

Elongation200mm%

Reduction of Area Z%

HRC

HB

Fatigue Life

psi

MPa

psi

MPa

psi

MPa

≥13

≥50

≥1.0X106

C

60000

414

90000

621

115000

793

≥13

≥50

D

85000

586

115000

793

140000

965

≥13

≥50

KD

85000

590

115000

795

140000

965

≥13

≥50

H

115000

795

140000

965

173339

1195

≥13

≥45

EHL

/

/

188500

1300

217500

1500

/

/

≥50

≥320

≥2.5X106

Note: When the minimum yield strength cannot be measured, it should be considered to be processed into standard sample and install extensometer to measure.

a It is generally made of high quality carbon steel, which can reach the mechanical properties of the table b A molybdenum steel (but not limited to this type of steel) is generally used, and the effective heat treatment can achieve the mechanical properties of this table

Chemical Composition OF Commonly Used Sucker Rod

AISI

C

Si

Mn

P

S

Cr

Ni

Mo

V

Cu

Al

4130

≤0.025

≤0.025

≤0.3

/

≤0.2

/

4140

≤0.025

≤0.025

≤0.3

≤0.2

/

4142

≤0.025

≤0.025

≤0.3

≤0.2

/

4330

≤0.025

≤0.025

≤0.2

/

4720

≤0.025

≤0.025