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Chrome Plated Bar

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chrome plated bar is widely used for building, bridge, railway, vehicle, various mechanical manufacaturing industry, petrochemical industry and marine R&D industry

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Product Details

Advantage of chrom plated bar

Hard chrome plated rod. It is a kind of bar which surface is treated through special grinding and hard chrome electroplating. Linear shaft is widely used in the automatic transmission devices, such as robot, automatic observer, computer, precision printer, all kinds of air cylinder, hydro-cylinder, piston rod, packing, woodworking, spinning, printing and dyeing machines, die-casting machine, injection molding machine, other leader, mandril and so on. Meantime, due to its hardness, it can prolong the service life of common precision mechanical devices.

Chrome Plated Rod Specification

1.Material: CK45, SAE1045, 4140, 4340, JIS45C, 40Cr, 42CrMo
2.Diameter: Φ 6-500 mm
3.Length: max 16m
4.Chrome layer: 20 micron (min)
5.Hardness of the chrome layer: 800HV-1150HV
6.Roughness: Ra ≤0.2u
7.Straightness: ≤ 0.2/1000
8.Diameter tolerance: ISO f7
9.Roundness: the deviation of roundness is 50% of the diameter tolerance at the most.
10.Supply condition: Hard chrome plated/ Hardened and tempered/ Induction hardened
11.Packing: Anti rust oil to be spread on rod surface and each rod to be packed in paper roll and then in wooden case.

Size:	Ø 6-300mm
Length:	1m -9m
Material:	CK45/ ST52/ 20MnV6/ 42CrMo4/ 40Cr/ bearing steel/ stainless steel
Tolerance	ISO f7
Chrome thickness:	20~30micron
Hardness of the chrome layer:	800HV(min)
Roughness:	Ra 0.2micron (max)
Straightness:	0.2/1000mm
Yield Strength	≥350 Mpa
Tensile Strength	≥580 Mpa
Elongation	≥ 15%
Supply condition:	1.Hard chrome plated
	2.Induction hardened
	3.Quenched & Tempered
	4.Induction hardened with Q&T

CHEMICAL COMPOSITION(%) OF CHROME PLATED BARED

CHEMICAL COMPOSITION(%)

Steel Grade	C%	Mn%	Si%	S%	P%	V%	Ni%	Cr%	Mo%	Cu%
CK45	0.42-0.50	0.50-0.80	0.17-0.37	≤0.035	≤0.035	/	≤0.25	≤0.25	/	≤0.25
ST52	≤0.22	≤1.6	≤0.55	≤0.04	≤0.04	0.02-0.15	/	/	/	/
20MnV6	0.17-0.24	1.30-1.70	0.10-0.50	≤0.035	≤0.035	0.10-0.20	≤0.30	≤0.30	/	≤0.30
42CrMo4	0.38-0.45	0.5-0.8	0.17-0.37	≤0.035	≤0.035	0.07-0.12	≤0.03	0.90-1.20	0.15-0.25	≤0.03
40Cr	0.37-0.45	0.50-0.80	0.17-0.37	≤0.035	≤0.035	/	≤0.30	0.80-1.1	/	≤0.03

MECHANICAL PROPERTIES

Material	Tensile Strength Rm (Mpa)	Yield Strength Rel (Mpa)	Elogation A%	CHARPY	CONDITION
CK45	610	355	15	>41J	Normalized
CK45	800	540	20	>41J	Q+T
ST52	500	355	22		Normalized
20MnV6	750	590	12	>41J	Normalized
42CrMo4	980	850	14	>47J	Q+T
40Cr	1000	800	10		Q+T

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