What are the characteristics of steel? - Knowledge

Steel rail is a type of steel bar that has a long, rectangular cross-section in the shape of an I or U. It is used to install railway tracks, and tracks for specialized vehicles such as cranes, trolleys, and locomotives, etc.They are high carbon rolled steel sections. These sections are laid end-to-end in two parallel lines over sleepers. This provides a continuous and levelled surface for trains to move. It also helps in carrying axle loads of the rolling stock.

What are the characteristics of steel?

Steel's key characteristics include exceptional strength, durability, and versatility, derived from its iron and carbon composition, allowing it to withstand high stress and impacts, resist wear, and be formed into countless shapes. It offers good toughness, malleability, and machinability, while properties like corrosion resistance (enhanced by alloying elements like chromium) and magnetic/electrical conductivity vary by grade, making it adaptable for construction, machinery, and more, with excellent recyclability.

heavy rail

Strength: High tensile and compressive strength, excellent for structural loads.

Durability: Resists wear, tear, and environmental factors, with a long lifespan.

Toughness: Absorbs impact energy without fracturing, resisting collisions and pressure.

Ductility & Malleability: Can be shaped, rolled, and forged without breaking, enabling diverse forms.

Hardness: Resists indentation and abrasion.

GNEE RAIL Commonly Used Steel Chemical Compositions

crane rail

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
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

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

As a professional rail fastener supplier, GNEE RAIL can provide different standard steel rail such as American, BS, UIC, DIN, JIS, Australian and South Africa which used in railway lines, cranes and coal mining.

light rail

Standard System	Rail Profile	Height (mm)	Head Width (mm)	Base Width (mm)	Web Thickness (mm)	Nominal Weight (kg/m)
Chinese Standard GB	GB 38kg	134	68	13.0	114	38.73
Chinese Standard GB	GB 43kg	140	70	14.5	114	44.653
Chinese Standard GB	GB 50kg	152	70	15.5	132	51.514
Chinese Standard GB	GB 60kg	176	73	16.5	150	60.64
Chinese Standard GB	GB 75kg	192	75	20	150	74.414
UIC Rail	UIC 54	159	70	14.3	140	54.77
UIC Rail	UIC 60	172	72	16.5	150	60.21
JIS Standard	JIS 50N	153	65	14.0	127	50.4
JIS Standard	JIS 60kg	174	65	16.0	150	60.8
DIN 5901	S49	149	67	14.0	125	49.4
DIN 5901	S54	154	70	15.0	140	54.6
BS Steel Riail	BS 60A	152	66.7	14.2	127	50.3
BS Steel Riail	BS 75A	165	69.9	15.9	136.5	62.1
BS Steel Riail	BS 90A	133	66.7	13.5	120.7	45.1
BS Steel Riail	BS 113A	160	67	15.1	133.4	56.4
AREMA	115RE	172	74.6	15.9	146.1	56.9
AREMA	132RE	180	76.2	17.5	152.4	65.5
AREMA	136RE	185	76.2	18.3	158.8	67.4

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