THICK WEB SWITCH EXPANSION JOINT (TWSEJ) (UPTO 100mm PERMISSIBLE MOVEMENT AT EACH END) FOR LWR B.G. (1673mm) FOR 60 KG. (UIC) RAIL ON PSC SLEEPERS TO DRAWING NO. RDSO/T-8822

THICK
WEB SWITCH EXPANSION JOINT (TWSEJ) (UPTO 100mm PERMISSIBLE MOVEMENT AT EACH
END) FOR LWR B.G. (1673mm) FOR 60 KG. (UIC) RAIL ON PSC SLEEPERS TO DRAWING NO.
RDSO/T-8822

INSPECTIOPN REPORT (STAGE -FINAL)

(CHEMICAL
TEST REPORT)

Sl. No.

Item Description & governing specification

C%

S%

P%

Mn%

Si%

IS:2062/2011

Gr. E 250 Quality BR

0.22% Max

0.045% Max

0.045% Max

1.50% Max

0.40% Max

1

5mm Thk. Plate

for Bearing Plate

0.21

0.020

0.017

0.87

0.19

2

12mm Thk. Plate

for Taper Washer

0.20

0.020

0.019

0.75

0.18

3

22mm Thk. Plate

for Bearing Plate

0.19

0.018

0.020

0.79

0.17

4

25mm (24mm) Thk. Plate

for Safety Plate

0.21

0.017

0.019

0.82

0.20

5

30mm Thk. Plate

for M.S. Clip

0.21

0.019

0.017

0.85

0.18

6

44mm Thk. Plate

for Bearing Plate

0.20

0.020

0.020

0.79

0.17

7

50mm (48/49mm) Thk. Plate

for Shoulder of 
Bearing Plate/Safety plate

0.19

0.019

0.021

0.78

0.21

 

 

8

IS:2062/2011

Gr. E 250 Quality A

0.23% Max

0.045% Max

0.045% Max

1.50% Max

0.40% Max

Angle tie (75x75x10)

0.20

0.020

0.020

0.79

0.17

 

 

9

IRS: T-16-19 & IS:2062/2011

Gr. E 250 Quality A

0.23% Max

0.045% Max

0.045% Max

1.50% Max

0.40% Max

Plate Screws

0.21

0.020

0.019

0.75

0.18

 

 

10

IRS/T-42/2020& IS:4072/1975

Gd. 6, 55Si7

0.50-0.60%

0.050% Max

0.050% Max

0.80-1.00%

1.50-2.00%

Single Coil Spring Washer

0.52

0.020

0.021

0.89

1.65

 

11

IS 3431:1982 Gr.55Si7

0.50-0.60%

0.045% Max

0.045% Max

0.80-1.00%

1.50-2.00%

Leaf Spring

0.54

0.022

0.020

0.87

1.65

 

 

12

IRS/T-23/67 &

IS:1875/92 Cl. 3

0.25-0.35%

0.040% Max

0.040% Max

0.60-0.90%

0.15-0.35%

Bolts

0.28

0.020

0.021

0.79

0.18

 

 

13

 

IRS/T-23/67 &

IS:1875/92 Cl. 2A

0.20-0.30%

0.040% Max

0.040% Max

0.60-0.90%

0.15-0.35%

Nuts

0.21

0.020

0.019

0.75

0.18

 

Chemical of Wedge: –

Sl. No.

Item Description

Specification

C%

S%

P%

Mn%

Si%

Cr%

Mo%

0.38-0.45%

0.035% Max

0.035% Max

0.60-0.90%

0.10-0.35%

0.90-1.20%

0.15-0.30%

14

Wedge

IS:5517-1993 Gr. 42 Cr4 Mo2

0.41

0.021

0.023

0.75

0.15

0.98

0.19


INSPECTIOPN REPORT (STAGE -FINAL)

 (PHYSICAL TEST
REPORT)

 


Sl.

No.

Item description &

Governing
specification

Test Parameters

Tensile

Strength

Yield

Strength

% Elongation

Min

Charpy

‘V’ Notch (J)

Bend Test

(2t) &(3t)

No Crack

 

IS:2062/2011

Gr. E 250 Quality BR

410 MPa

(Min)

250 MPa min (< 20mm),

 

23%

27J (Min)

2T/3T

1

5mm Thk. Plate

for Bearing Plate

550

334

29

NA

OK

2

12mm Thk. Plate

for Taper Washer

574

329

28

48

OK

 

IS:2062/2011

Gr. E 250 Quality BR

410 MPa

(Min)

240 MPa min (20- 40mm)

 

23%

27J (Min)

2T/3T

3

22mm Thk. Plate for Bearing Plate

556

330

27

47

OK

4

25mm (24mm) Thk. Plate

for Safety Plate

576

325

28

48

OK

5

30mm Thk. Plate for M.S. Clip

550

334

25

41

OK

 

IS:2062/2011

Gr. E 250 Quality BR

410 MPa

(Min)

230 MPa min (> 40mm)

23%

27J (Min)

2T/3T

6

44mm Thk. Plate for Bearing Plate

576

325

28

43

OK

7

50mm (48/49mm) Thk. Plate for Shoulder of  Bearing Plate/Safety plate

551

330

25

41

OK

 

 

8

IS:2062/2011

Gr. E 250 Quality A

410 MPa

(min)

250 MPa min (< 20mm)

23%

NA

2T

Angle Tie

576

325

28

48

OK

 

 

9

IRS/T-23/67

UTS (55-68) Kgf/mm²

30° Head Soundness

Unscrewing 2kg-12kg

Drifting

1.5 Times

Track
Bolts & Nuts Assembly

59

NA

OK

NA

10

Track
Bolt

NA

OK

NA

NA

11

Track
Nut

NA

NA

NA

OK

 

 

12

IS:5517-1993 Gr.42Cr4Mo2

UTS (900-1050)

MPa

Proof Stress

650 MPa (Min)

Elongation

11% Min

Hardness

250 HB Min.

Izod Impact

50 (J) Min

Wedge

997

721

15

275

87

Grain Size

IS 4748

Inclusion rating IS 4163
(ABCD 3 max. both for thick & thin series)

A

B

C

D

5 to 8

TK

TN

TK

TN

TK

TN

TK

TN

 

1.5

1

1.5

1

1.5

1.5

1

1

 

Sl.

No.

Item description &

Governing
specification

Test Parameters

13.

Specified Value IRS 
T 10, IRS:T-16/2019,

 (IS 2062:
2011 Gr. E250

Quality : A)

Tensile Strength

(U.T.S) (MPa)

Elongation

(%)

Yield Strength

(MPa)

Bend

Test

Galvanized Plate Screw

RDSO/T-3915,RDSO/T-3916

410 MPa (min.)

23% (min.)

250 MPa min

 

45°

514

29

354

OK

Galvanization Test of Plate screw
IRS:T-16/2019 Cl.2.2.1  &
IS:2629-85

Freedom room defects cl.6.1 of IS:2629-85

Uniformity of coating Thickness cl.6.2 of
IS:2629-85

Mass of Coating cl.6.3 of IS:2629-85 (300
g/m2 (Min.)

Knife Test cl.6.4.2 of IS: 2629-85

OK

OK

OK

OK


Sl. No

Item

Hardness

Flattening Test

Twist Test

Depth of Decarb.

Decompression Test

14

IRS
T42-88

Gr.55Si7

43-49 HRC

Decrease height <0.5mm

No sign of fracture while
twisted through an angle of 90

0.10 Max

As per IRS T-42-1988

Single
Coil Spring  Washer

45

OK

OK

OK

OK

15

  IS: 1135/1995

Gr.
55 Si 7

Hardness

363 – 444 HB

 

Depth
of decarburization

0.25 (Max)

Inclusion rating (2.5
ABCD both for thick & thin series Max)

A

B

C

D

TK

TN

TK

TN

TK

TN

TK

TN

Leaf Spring

 

395

OK

1

1.5

1.5

1.5

1

1

1.5

2



 

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