Hollow metal rod

Hollow metal rod

Made of cold drawn seamless tubes or hollow bars, by grinding and precision polishing on the outside diameter and then chrome plated to a certain thickness on the OD,Hollow Chrome Plated Bar is known as chrome plated tube,and they also called chrome plated OD tubing.

Gastac is theprofessional hollow chrome plated bar manufacturer and supplier, Gastac has been supplying and exporting hollow chrome bar from China for almost 5 years, if you have any requirements,welcome to call or e-mail us without hesitation.

Material: CK45, SAE1045, 4140, 4340, JIS45C, 40Cr, 20MnV6, 42CrMo, SS431, SS430,

Stainless: Steel 304/316/2205, etc

Diameter: Φ6-500mm

Length: max 20 meters

Chrome layer: min 20/25/30/50 Micron or customized

Hardness of the chrome layer: 850 HV(min)-1150HV

Roughness: Ra <= 0.4

Straightness: <=0.2/1000

Diameter tolerance: ISO f7/f8/f9/h8/h9 or as request

Roundness: Half of the tolerance ISO f7

Heat treatment Type:1) Normal no heat  2)Q+T(Quenched+Tempered) 3)Induction Hardened

Delivery condition:

Hard Chrome Piston Rod(HRC 15-20);

Quenched & Tempered( Q+T) Rod(HRC 28-32);

Induction Hardened Rod( HRC 55-62);

Q+T Induction Hardened Rod(HRC 60-65)

Corrosion resistance: Test in natural salt spray according to ASTM B 117-96 hours

Packing: Anti-rust oil to be spread on rod surface and each rod to be packed in paper roll and then in wooden case

1.CHEMICAL COMPOSITION

Materil	C%	Mn%	Si%	S%	P%	V%	Cr%
Ck45	0.42-0.50	0.50-0.80	0.04	0.035	0.035
ST52	0.22	1.6	0.55	0.035	0.04
20MnV6	0.16-0.22	1.30-1.70	0.10-0.50	0.035	0.035	0.10-0.20
42CrMo4	0.38-0.45	0.60-0.90	0.15-0.40	0.03	0.03		0.90-1.20
40Cr	0.37-0.45	0.50-0.80	0.17-0.37				0.80-1.10

2.MECHANCIAL PROPERTIES

Material	T.S  N/MM2	Y.S  N/MM2	E%(MIN)	CHARPY	CONDITION
CK45	610	355	15	>41J	NORMALIZE
CK45	800	630	20	>41J	Q + T
ST52	500	355	22		NORMALIZE
20MnV6	750	590	12	>40J	NORMALIZE
42CrMo4	980	850	14	>47J	Q + T
40Cr	1000	800	10		Q + T