Polish Rod

AISI 414X
Alloy Steel

Max. fatigue resistance

Abrasion resistance

Corrosion tolerance

AISI 1045
Piston Steel

Fatigue resistance

Abrasion tolerance

Corrosion tolerance

AISI 1045
w/ Spray Metal

Fatigue resistance

Max. abrasion resistance

Corrosion resistance

Unit		4140/4142 Alloy Steel	1045 Piston Steel	Spray-Metal Piston Steel
Tensile Strength	ksi		125	90	125
Tensile Strength	Mpa		861	689	620

Chemical Composition

Chemical %	4140/4142 Allow Steel	1045 Piston Steel	Spray Metal
Carbon	0.38-0.45(1)	0.43-0.5	0.5-1
Chromium	0.8-1.1	–	12-18
Iron	–	–	3.0-5.5
Manganese	0.75-1.0	0.6-0.9	–
Molybdenum	0.15-0.25	–	–
Nickel	<0.35	–	–
Phophorus	<0.35	<0.04	–
Silicon	0.15-0.35	–	3.5-5.5
Sulfur	<0.04	<0.05	–
Aluminum	–	–	<0.05
Boron	–	–	2.5-4.5
Cobalt	–	–	<0.1
Titanium	–	–	<0.5

Note: (1) AISI 4140 is 0.38-0.43% and AISI 4142 is 0.40-0.45%

Dimensions

AISI 414X Alloy Steel
Unit	Body Dia.	Pin Size	Length Unit	Length Selection
AISI 414X Alloy Steel
inch	1-1/8	5/8, 3/4	ft	8, 11, 16, 22, 24 26
mm	28.58	-15.88, 19.05	m	2.44, 3.35, 4.88, 6.71, 7.32, 7.93

AISI 1045 Piston Steel
Unit	Body Dia.	Pin Size	Length Unit	Length Selection
inch	1-1/4	7/8	ft	11, 16, 22, 24, 26, 30, 36
mm	31.75	22.23	m	3.35, 4.88, 6.71, 7.32, 7.93, 9.14, 10.97

AISI 1045 w/ Spray Metal
Unit	Body Dia.	Pin Size	Length Unit	Length Selection
inch	1-1/2	1	ft	16, 22, 24, 26, 30, 36
mm	38.1	25.4	m	4.88, 6.71, 7.32, 7.93, 9.14, 10.97

Manufacturing Process

Exceed polished rod are manufactured and inspected to be fully comply with API-11B spec. Pin threads is cold-formed and rolled, creating a much stronger pin compared to old cut thread or burnished process. The rolled threads improve the fatigue performance of the polished rod significantly and reduces common polished rod failures at thread roots dramatically.