1045 Hard Chrome Plated Bar

1045 is a medium tensile carbon steel supplied in the cold drawn or turned, precision ground, polished, chrome plated and final polished condition, with a typical base metal tensile strength of 670 - 800 Mpa, plus a typical hard chrome plated surface hardness of HV 1000 - 1150. Characterised by an extremely smooth surface finish with excellent wear and corrosion resistance, coupled with a base material giving good strength and impact properties, plus good machinability and reasonable weldability.

1045 hard chrome plated bar is used extensively by the hydraulic and pneumatic industries, and is employed by other industry sectors for a wide range of applications.
Typical applications are: Agricultural Equipment, Compressors, Car Jacks and other Transport Lifting equipment, Food Processing Equipment, Hoists, Mining and other Earth Moving Equipment, Machine Tools, Mechanical Tools and Equipment, Rods and Shafts (Various), Waste Disposal Transport and Equipment etc.
Colour Code Stocked Sizes
Serpentine (Bar End)

Metric 6 mm - 200 mm Dia
Imperial 1/2" - 6"Dia
Related Specifications
Australia AS 1443 - 1994 1045
Germany W.Nr 1.0503 C45
W.Nr 1.1191 CK45
Great Britain BS970 - Part 3 - 1991 080A47
BS970 - Part 1 - 1972 080M46
BS970 - 1955 EN43B
Japan JIS G 4051 S45C
ASTM A29/A29M - 91 1045
SAE 1045 UNS G 10450
Chemical Composition
Min. % Max. %
Carbon 0.43 0.50
Silicon 0.10 0.35
Manganese 0.60 0.90
Phosphorous 0 0.04
Sulphur 0 0.04
Typical (Base Metal) Mechanical Properties - As Supplied Condition
Manufacturing Process Cold Drawn Turned
Tensile Strength Mpa 800 670
Yield Strength Mpa 700 470
Elongation in 50mm % 9 20
Hardness Brinell HB 230 200
Hard Chrome Plating
Typical Surface Hardness HV 1000 - 1150
Typical Surface Smoothness 0.10 - 0.30 umRa (Microns)
Typical Surface Deposit* 0.025 - 0.050 mm
(0.001") - (0.002")
*Note: Can be supplied up to 0.125 mm against order, subject to minimum quantity requirements.
Diameter and Straightness Tolerance
Diameter mm Up to 51mm Dia Over 51mm - 102mm Dia Over 102mm Dia Straightness
Inches Up to 2.0 Over 2.0 - 4.0 Over 4.0 Below 50mm 0.25mm/1000mm
Over 50mm 0.30mm/1000mm
Tolerance mm +0.00 -0.025 +0.00 -0.050 +0.00 -0.075
Inches +0.00 -0.001 +0.00 -0.002 +0.00 -0.003
Typical Bar Lengths
Up to 18 mm Dia 2000mm - 3600mm
19.05 mm to 25 mm Dia 4000mm
Over 25 mm Dia 6000mm
Bar lengths are approximates only.
NB. Bars have 100mm approx. unchromed surface at each end.
Supplied in cardboard tubes for protection.
1045 hard chrome plated bar has very good machinability, similar to 1045 uncoated bar. Machining however should commence beneath the chrome plating, or at the unchromed surface at the end of the bar. To protect the polished chrome surface, soft materials such as copper, aluminium or mild steel should be used as clamping materials and any particles of hard chrome should be removed immediately to avoid scratching. Otherwise all machining operations may be carried out satisfactorily.
1045 hard chrome plated bar is readily weldable (similar to 1045 uncoated bar) providing the correct procedure is employed. The cardboard tube protecting the chrome plating should first be removed from the heat affected area otherwise it can cause some corrosion of the plating due to fumes emitted.
Welding Procedure
Welding of 1045 should always be carried out using low hydrogen electrodes - please consult your welding consumables supplier.
Suggested pre-heat temperature
Section 25mm 50mm 75mm 150mm +
oC 100 140 200 300
Post Welding
Cool as slowly as possible in dry lime, sand etc.
Interlloy believes the information provided is accurate and reliable. However no warranty of accuracy, completeness or reliability is given, nor will any responsibility be taken for errors or omissions.