What are the properties of crane rail material? - Knowledge

Crane rail is used for carrying heavy objects, which have high bearing capacity. Crane rail is also called crane rail. Its height is low and its head width and waist thickness are large. It is required to check the chemical composition and tensile strength. Used for laying crane and trolley rails.

heavy rail

What are the properties of crane rail material?

Crane rail material grades include low carbon steel, high yield strength steel, carbon steel, boron steel, and low alloy steel.

Crane rail materials are manganese steel, carbon steel, high silicon copper, copper rail, silicon rail, and so on. The railway rail is composed of steel, which can be divided into ordinary manganese-containing steel rail, copper-containing ordinary carbon steel rail, high silicon copper-containing steel rail, copper rail, manganese rail, silicon rail, etc. Most crane rails adopt U71Mn, and most light rails are made of Q235 and 55Q; Most heavy rails are made of 45MN and 71mn.

light rail

Q235B	Mechanical property						Chemical composition(%)
	Yield strength		Tensile strength		Elongation	Hardness	C	Si	Mn	S	P
	MPa	kg/mm²	MPa	kg/mm²	min	HB		≤		≤	≤
	≥	≥
	235	24	375-460	38-47	26%		0.12-0.22	0.35	0.30-0.70	0.045	0.045

55Q	Mechanical property						Chemical composition(%)
	Yield strength		Tensile strength		Elongation	Hardness	C	Si	Mn	S	P
	MPa	kg/mm²	MPa	kg/mm²	min	HBW				≤	≤
	≥	≥	≥	≥	min	≥				≤	≤
			685	69		197	0.50-0.60	0.15-0.35	0.60-0.90	0.04	0.04

Among the crane rail material grades, U71Mn is the best material. Because adding 2-3% manganese into the steel, the low manganese steel is as brittle as glass. However, if adding > 13% manganese to make high manganese steel, it will become both hard and ductile. Therefore, people use manganese steel to make wear-resistant machine parts, bridges, and crane rails.

Steel Grade	C(%)	Si	Mn	Cr	V	P	S	Tensile Strength (Rm/MPa)
U71Mn	0.65~0.76	0.15~0.58	0.70~1.40	–	–	≤0.035	≤0.030	≥880

GNEE RAIL Commonly Used Steel Chemical Compositions:

Steel Grade	C (%)	Si	Mn	Cr	V	P	S	Tensile Strength (Rm/MPa)
50Mn	0.48-0.56	0.17-0.37	0.70-1.00	0.25	–	≤0.035	≤0.035	≥645
U71Mn	0.65~0.76	0.15~0.58	0.70~1.40	–	–	≤0.035	≤0.030	≥880
900A	0.60-0.80	0.10-0.50	0.80-1.30	–	–	≤0.040	≤0.040	≥880
U75V	0.71~0.80	0.50~0.80	0.75~1.05	–	0.04~0.12	≤0.035	≤0.030	≥980
U78CrV	0.72~0.82	0.50~0.80	0.70~1.05	0.30~0.50	0.04~0.12	≤0.035	≤0.030	≥1080
U77MnCr	0.72~0.82	0.10~0.50	0.80~1.10	0.25~0.40	–	≤0.035	≤0.025	≥980
U76CrRE	0.71~0.81	0.50~0.80	0.80~1.10	0.25~0.35	0.04~0.08	≤0.035	≤0.025	≥1080

GNEE RAIL offer flat steel rails for beam cranes and traditional I-beam steel rails. Flat rails in sizes ranging from 30x40mm to 100x100mm for structural strength as well as cost-effectiveness. Additionally, we supply QU rails (QU70, QU80, QU100, QU120) and ASCE rails (ASCE40, ASCE50, ASCE60).

steel rail

Rail Type	Standard	Size	Material	Standard Length
QU Series	Chinese YB/T 5055-2014	QU70, QU80, QU100, QU120	U71Mn, U75V	12m
A Series	German DIN536	A45, A55, A65, A75, A100, A120, A150	50Mn,U71Mn	10/12/15m
ASCE Series	American ASTM, AREMA	ASCE25, ASCE40, ASCE60, ASCE75, ASCE85, ASCE90, ASCE115, ASCE136	700/900A/1100	6-12m, 12-25m
UIC Series	International Union of Railways UIC860-0, EN-13674-1	UIC50, UIC54, UIC60	900A/1100	12-25m
Mining Rail	GB /T 11264-2012	8kg, 9kg, 12kg, 15kg, 18kg, 22kg, 24kg, 30kg	Q235B, 55Q	6-24m
Heavy Railroad Rails	GB 2585-2007	38kg, 43kg, 50kg, 60kg, 75kg	50Mn,U71Mn	6-24m
BS Series	British BS11-1985	BS50'O',BS60A,BS60R, BS75A,BS75R,BS80A, BS100A,BS113A	700/900A	8-25m
JIS Series	Japanese JIS E1103/1101	15kg, 22kg, 30A, 37A, 50N, CR73, CR100	According to JIS	9-10m
AS Series	Australian AS 1085	31kg, 41kg, 47kg, 50kg, 53kg, 60kg, 66kg, 68kg, 73kg, 86kg, 89kg	900A/1100	8-25m
EN Series	EN Standard EN 13674-4	54E1, 60E1, 39E1, 45E1, 49E1, 49E2, 49E5, 50E1, 50E6, 54E4	R200, R260, R260MN, R350HT	6-24m
ISCOR Series	South African ISCOR	15kg, 22kg, 30kg, 40kg, 48kg, 57kg	700/900A	9-25m

If you have any needs for crane rail products, please feel free to contact us at GNEE RAIL. A one-stop service for all your crane track and accessories needs.