RT-4733 Lab Test Report

Description of Stores:-

Manufacturing & Supply of Fabricated Switches 1 in 12 / 10125mm for 52 Kg Rails to Drg. No. RDSO/T-4733 with Check Rails &Main Steel Fittings

Qty.:

1. PHYSICAL TEST REPORT

Sl. No.	Item	Yield Strength		Tensile Strength		Elongation Min%		Hardness		Charpy ‘V’ Notch (J)		Bend Test (2t) No Crack
		Specified	Actual	Specified	Actual	Specified	Actual	Specified	Actual	Specified	Avg.
1	*Bolts & Nut IRS/T-23/67	—	—	55-68 Kg/mm2	59.20 58.74	—	—	—	—	—	—	—
2	*CI Block (IS:210 Gr. FG/200)	—	—	200 Mpa (Min)	256.13 242.85	—	—	160-220 BHN	193 197	—	—	—
3	**(20mm Thk. Plate) Spherical Washer, Lug & Special Bearing Plate	240 Mpa (Min)	319.45 295.67	410 Mpa (Min)	510.36 499.65	23% (Min)	32.99% 26.94%	—	—	27 J (Min)	44	Satisfactory
4	**(16mm Thk Plate) M.S. Bracket & Stops	250 Mpa (Min)	300.36 299.95	410 Mpa (Min)	467.09 468.85	23% (Min)	31.39% 29.85%	—	—	27 J (Min)	39	Satisfactory
5	**(14mm Thk Plate) Slide Chair, Insulated Tie Plate (Extended), MS Plate	250 Mpa (Min)	324.54 298.70	410 Mpa (Min)	510.36 499.54	23% (Min)	32.19% 27.65%	—	—	27 J (Min)	42	Satisfactory
6	**(12mm Thk Plate) MS Flat of Insulated Str. Bar, MS Flat Tie Bar & Steel Shoulder	250 Mpa (Min)	280.62 275.85	410 Mpa (Min)	446.51 456.80	23% (Min)	32.77% 27.85%	—	—	27 J (Min)	38	Satisfactory
7	**(10mm Thk Plate) Reinforcing Strap	250 Mpa (Min)	304.68 295.85	410 Mpa (Min)	478.01 462.95	23% (Min)	33.54% 29.82%	—	—	27 J (Min)	40	Satisfactory
8	**(6mm Thk Plate) Supporting Plate of Slide Chair & Insulated Tie Plate	250 Mpa (Min)	332.02 294.90	410 Mpa (Min)	496.06 487.94	23% (Min)	29.36% 28.50%	—	—	—	—	Satisfactory

* Sample of Charpy Impact Test cannot be drawn.

** IS 2062:2011 Grade E 250 Quality BR

*** IRS: T-16-81 & IS:2062:2011 Grade E250 Quality BR

• Drifting Test of Nuts:- Nuts have been subjected to this test as per IRS/T-23/67 Class 12.2.1:-                     Satisfactory
• Head Soundness Test of Bolts:- Bolts have been subjected to this test as per IRS/T-23/67 Class 12.1.1:- Satisfactory
• Screwing & Unscrewing Test of Bolts/Nuts:- The test have been carried out as per IRS/T-23/67 Class 14.1:-

       Satisfactory

Rivet:-

Sl. No.	Size	Shear Strength (Mpa)	Dump Test
1 & 2	Dia. 20mm	374.7, 369.9	Satisfactory
Specified	IS:1148	330 Mpa (Min)	No Crack (As per Class 10 of IS:1148)

Sl. No.	Size	Shear Strength (Mpa)	Dump Test
1 & 2	Dia. 18mm	369.5, 365.8	Satisfactory
Specified	IS:1148	330 Mpa (Min)	No Crack (As per Class 10 of IS:1148)

Magnetic Particle Test:-

This test been carried out on throughout the bend portion of Stock Rails and Tongue Rails of 1 in 12 (Curved) 10125mm for Fan Shaped turnouts BG 52 Kg Rails Drg. No. RDSO/T-4733 Qty. 24 Sets (LH – 12 Sets & RH 12 Set): Satisfactory

USFD Resting Rails:-

1 in 12 (Curved) 10125mm for fan Shaped turnouts BG 52 Kg rails Drg. No. RDSO/T-4733 Qty. 24 Sets (LH-12 Sets & RH-12 Set)

Sl. No.	Description of Rail	Qty. of Rail	USFD Testing
1.	Rail 52 Kg 13 Meter	112 Nos.	Were tested ultrasonically and found satisfactory & each rail were examined visually and found free from harmful surface defects.

E) CHEMICAL ANALYSIS

Sl. No	Item Description	Specification	C%		Mn%		Si%		S%		P%
			Specified	Actual	Specified	Actual	Specified	Actual	Specified	Actual	Specified	Actual
1.	(20mm Thk. Plate) Spherical Washer, Lug & Special Bearing Plate	IS:2062:2011 Grade E 250 Quality BR	0.22 (Max)	0.177	1.50 (Max)	0.855	0.40 (Max)	0.185	0.045 (Max)	0.021	0.045 (Max)	0.023
2.	(16mm Thk. Plate) M S Brackets & Stops	IS:2062:2011 Grade E 250 Quality BR	0.22 (Max)	0.142	1.50 (Max)	0.714	0.40 (Max)	0.194	0.045 (Max)	0.013	0.045 (Max)	0.014
3.	(14mm Thk. Plate) Slide Chair, Insulated tie Plate(Extended)’ M S Plate	IS:2062:2011 Grade E 250 Quality BR	0.22 (Max)	0.132	1.50 (Max)	0.707	0.40 (Max)	0.160	0.045 (Max)	0.022	0.045 (Max)	0.021
4.	(12mm Thk. Plate) M.S.Flat of Insulated Str. Bar’ M.S.Flat Tie Bar & Steel Shoulder	IS:2062:2011 Grade E 250 Quality BR	0.22 (Max)	0.171	1.50 (Max)	0.882	0.40 (Max)	0.175	0.045 (Max)	0.021	0.045 (Max)	0.023
5.	(10mm Thk. Plate) Reinforcing Strap	IS:2062:2011 Grade E 250 Quality BR	0.22 (Max)	0.129	1.50 (Max)	0.748	0.40 (Max)	0.187	0.045 (Max)	0.014	0.045 (Max)	0.015
6.	(6mm Thk. Plate) Supporting Plate of Slide chair & Insulated Tie Plate	IS:2062:2011 Grade E 250 Quality BR	0.22 (Max)	0.146	1.50 (Max)	0.728	0.40 (Max)	0.193	0.045 (Max)	0.015	0.045 (Max)	0.014
7.	Bolts	IRS/T-23/67 & IS:1875 CI 3	0.25-0.35	0.274	0.60-0.90	0.656	0.15-0.35	0.209	0.040 (Max)	0.020	0.040 (Max)	0.019
8.	Nuts	IRS/T-23/67 & IS:1875 CI 2A	0.20-0.30	0.256	0.60-0.90	0.810	0.15-0.35	0.244	0.040 (Max)	0.038	0.040 (Max)	0.032
9.	Rivet(Φ18mm)	IS:1148	0.23 (Max)	0.187	—	—	—	—	0.050 (Max)	0.032	0.050 (Max)	0.041