What are the quality standards of steel?

Steel Rails, also known as rail profiles, are the main components of railway tracks. Its function is to guide the wheels of locomotives and vehicles; withstand the enormous pressure of the wheels, and pass pressure force on to rail sleepers.

 

What are the quality standards of steel?

 

Steel quality standards define properties like strength, ductility, and composition through systems like ASTM, ISO, and EN, ensuring safety and performance for applications from construction (ASTM A36, EN 10025) to stainless steels (304/316), guiding manufacturing and use for reliability and specific functions. These standards cover chemical makeup, mechanical testing, and fabrication processes, with examples like ASTM A36 for structural steel and ISO 9001 for quality management.

 

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

 

 

GB Standard Steel Rail

 

Classification		Height(mm)	Head (mm)	Bottom (mm)	Thick(mm)	Weight (kg/m)
Light Rail	8 KG/M	65	25	54	7	8.42
	9 KG/M	63.5	32.1	63.5	5.9	8.94
	12 KG/M	69.85	38.1	69.85	7.54	12.2
	15 KG/M	79.37	42.86	79.37	8.33	15.2
	18 KG/M	80	40	80	10	18.06
	22 KG/M	93.66	50.8	93.66	10.72	22.3
	24 KG/M	107	51	90	10.9	24.46
	30 KG/M	107.95	60.33	107.95	12.3	30.1
Heavy Rail	38 KG/M	134	68	114	13	38.733
	43 KG/M	140	70	114	14.5	44.653
	45 KG/M	145	67	126	14.5	45.546
	50 KG/M	152	70	132	15.5	51.514
	60 KG/M	176	73	150	16.5	60.64
Crane Rail	QU 70	120	70	120	28	52.8
	QU 80	130	80	130	32	63.69
	QU 100	150	100	150	38	88.96
	QU 120	170	120	170	44	118.1

 

BS11:1985 Standard Steel Rail

 

Standard: BS11:1985
Size	Dimension(mm)				Weight (kg/m)	Length(m)
	Head	Height	Bottom	Thickness
50 O	52.39	100.01	100.01	10.32	24.833	6-18
60 A	57.15	114.3	109.54	11.11	30.618
75 A	61.91	128.59	114.3	12.7	37.455	8-25
75 R	61.91	128.59	122.24	13.1	37.041
80 A	63.5	133.35	117.47	13.1	39.761
80 R	63.5	133.35	127	13.49	39.674
90 A	66.67	142.88	127	13.89	45.099
100 A	69.85	152.4	133.35	15.08	50.182
113 A	69.85	158.75	139.7	20	56.398

 

UIC 860 Standard Steel Rail

 

Standard: UIC860
Size	Dimension(mm)				Weight (kg/m)	Length(m)
	Head	Height	Bottom	Thickness
UIC50	70	152	125	15	50.46	12-25
UIC54	70	159	140	16	54.43
UIC60	74.3	172	150	16.5	60.21

 

DIN 13674-1-2003 Standard Steel Rail

 

Standard：DIN 536
Size	Dimension(mm)				Weight (kg/m)	Length(m)
	Head	Height	Bottom	Thickness
A55	55	65	150	31	31.8	10-12
A55	65	75	175	38	43.1
A75	75	85	200	45	56.2
A100	100	95	200	60	74.3
A120	120	105	200	72	100

 

Australian 1085 Standard Steel Rail

 

Standard: AS 1085
Size	Dimension(mm)				Weight (kg/m)	Length(m)
	Head	Height	Bottom	Thickness
31KG	63.5	117.5	108	11.5	31.5	8-25
47KG	70	141.3	127	14.3	46.5
50KG	70	154	127	15	50.8
60KG	70	170	146	16.5	61
68KG	73.4	186	152	17.5	67.6
73KG	70	157	146	32	73.63
86KG	102	102	165	84.11	85.5
89KG	102	114	178	51	89.81

 

JIS E 1103/1101 Standard Steel Rail

 

Standard: JIS E 1103/1101
Size	Dimension(mm)				Weight (kg/m)	Length(m)
	Head	Height	Bottom	Thickness
JIS 15KG	42.86	79.37	79.37	8.33	15.2	9-10
JIS 22KG	50.8	93.66	93.66	10.72	22.3	9-10
JIS 30A	60.33	107.95	107.95	12.3	30.1	9-10
JIS 37A	62.71	122.24	122.24	13.49	37.2	10-25
JIS 50N	65	153	127	15	50.4	10-25
CR 73	100	135	140	32	73.3	10-12
CR 100	120	150	155	39	100.2	10-12

 

South African Standard Steel Rail

 

Standard: ISCOR
Size	Dimension(mm)				Weight (kg/m)	Length(m)
	Head	Height	Bottom	Thickness
15 KG	41.28	76.2	76.2	7.54	14.905	9
22 KG	50.01	95.25	95.25	9.92	22.542	9
30 KG	57.15	95.25	109.54	11.5	30.25	9
40 KG	63.5	127	127	14	40.31	9-25
48 KG	68	150	127	14	47.6	9-25
57 KG	71.2	165	140	16	57.4	9-25

 

What Quality Standards Address?

 

• Mechanical Properties: Yield strength, tensile strength, ductility, hardness, impact resistance.

 

• Chemical Composition: Carbon content and alloying elements.

 

• Application-Specific Needs: Grades for structural, stainless, tool, or alloy steels.

 

• Manufacturing & Management: Fabrication standards, Factory Production Control (FPC), and Quality Management Systems (QMS) like ISO 9001.

 

Are steel rails of different standards interchangeable?

 

No, steel rails from different international standards (like UIC, AREMA, JIS, GB) are generally not directly interchangeable due to significant differences in profile (dimensions, head shape, base width), material composition, and fastener hole patterns, which impact safety, wheel compatibility, and track integrity; mixing them without extensive engineering analysis and special fittings is dangerous and not recommended, though standards-specific components (like fishplates) are designed for their own systems.

 

Key Reasons for Incompatibility

 

 

• Dimensional & Profile Differences: Each standard defines specific rail head, web, and base dimensions, as well as head curvature, affecting how wheels interact with the rail.

 

• Material & Strength: Different standards specify various steel grades (e.g., carbon-manganese, alloy steels) with varying wear resistance, strength, and fatigue properties, crucial for high-stress railway use.

 

• Fastener & Joint Issues: Even if profiles seem similar, bolt hole spacing on fishplates (rail joints) and other accessories often differs, preventing secure connections.

 

• Wheel-Rail Interaction: Incompatible rail profiles can lead to poor wheel contact, causing excessive wear, vibration, and potential derailment.

 

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

 

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