1045 Induction Hardened Hard Chrome Plated Bar

1045 is a medium tensile carbon steel supplied in the turned, induction hardened and straightened, precision ground, polished, chrome plated and final polished condition, with a typical base metal tensile strength of 670 Mpa, an induction hardened case of 3.2mm thick approx. to Rc55-65, 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, supported by an induction hardened case offering greater strength and resistance to mechanical damage, coupled with good core strength.

1045 induction hardened hard chrome plated bar is used extensively by the hydraulic and pneumatic industries, for those applications utilising its high surface hardness and excellent resistance to surface impact.
Colour Code Stocked Sizes
Yellow (End Caps)

Metric 25 mm - 110 mm Dia
Imperial 7/8" - 5"Dia
Related Specifications (Base Material)
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 (Base Material)
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 Turned
Tensile Strength Mpa 670
Yield Strength Mpa 470
Elongation In 50mm % 20
Hardness Brinell HB 200
Typical Properties Induction Hardened Case
Thickness 3.2mm
Hardness Rc 55-65
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 51 - 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
Over 25mm Dia 6000mm
Bar lengths are approximates only.
NB. Bars have 100mm approx. unchromed surface at each end.
Supplied in cardboard tubes for protection.
1045 induction hardened hard chrome plated bar, due to the extreme hardness of the induction hardened case, requires special cutting blades or grinding equipment.
1045 induction hardened hard chrome plated bar, due to the extreme hardness of the induction hardened case, requires *ceramic tipped machine tools. Having removed the induction hardened case, the core has very good machinability, similar to 1045 standard 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.*Please consult your machine tool supplier.
Welding of 1045 induction hardened hard chrome plated bar is not generally recommended.
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.