Pengaruh Variasi Arus Pengelasan dan Variasi Diameter Elektroda Terhadap Kekuatan Tarik Pada Stainless Steel AISI 304

(1)

Lampiran 1

Tabel Lembar Pengolahan Data Spesimen Uji Tarik Dengan Diameter Elektroda 2.6 mm

Arus L (mm) ∆L (mm) Lebar (mm) Tebal (mm) Luas A (mm2) Gaya F (N) σ (MPa) ε (%) E (MPa) 85 A 200 31.4 12.55 4.74 59.487 21000 353.132 15.7 2249.24841 85 A 200 37.8 12.04 4.85 58.394 21500 368.353 18.9 1948.95767 85 A 200 39.2 12.27 4.96 60.8592 23200 381.762 19.6 1947.76531

rata-rata 367.749 18.0667 2048.65713

95 A 200 24.6 12.07 4.67 56.3669 20200 358.351 12.3 2913.42276 95 A 200 21.9 12.07 4.51 54.4357 18000 330.625 10.95 3019.40639 95 A 200 22.3 12.1 4.55 55.055 18500 336.752 11.15 3020.19731

rata-rata 341.9093 11.4667 2984.34216

105 A 200 20.2 12.3 4.45 54.735 16700 305.1064 10.1 3020.85566 105 A 200 21.3 12.5 4.88 61 19700 322.9508 10.65 3032.40206 105 A 200 20.6 12.36 4.49 55.4964 17000 306.3262 10.3 2974.04054

rata-rata 311.4611 10.35 3009.09942

Perhitungan :

Nilai Tegangan untuk diameter elektroda 2,6 mm masing-masing spesimen adalah sebagai berikut :

a. Variasi arus 85 A Spesimen 1

σ

=�

�=

2100 �

59,487 ��2= 353,018 N/mm

2

Spesimen 2

σ

=�

�=

21500 �

58,934 ��2=368,188 N/mm

2

Spesimen 3

σ

=�

�=

23200 �

60,8592 ��2= 381,209 N/mm

2

b. Variasi arus 95 A Spesimen 1

σ

=�

�=

20200 �

56,3669 ��2=358,372 N/mm

2

Spesimen 2

σ

=�

�=

18000 �

54,4357 ��2= 330,469 N/mm

2

Spesimen 3

σ

=�

�=

18500 �

55,055 ��2= 336,027 N/mm

(2)

c. Variasi arus 105 A Spesimen 1

σ

=�

�=

16700 �

54,735 ��2= 305,106 N/mm

2

Spesimen 2

σ

=�

�=

19700 �

61 ��2= 322,95 N/mm

2

Spesimen 3

σ

=�

�=

17000 �

55,4964 ��2= 306,328 N/mm

2

Nilai regangan untuk diameter elektroda 2,6 mm masing-masing spesimen adalah sebagai berikut :

a. Variasi Arus 85 A Spesimen 1

ε

=

∆�

�x 100% =

31,4

200x 100 % = 15,7 %

Spesimen 2

ε

=

∆�

�x 100% =

37,8

200 x 100 % = 18,9 %

Spesimen 3

ε

=

∆�

� x 100% =

39,2

200 x 100 % = 19,6%

b. Variasi Arus 95 A Spesimen 1

ε

=

∆�

� x 100% =

24,6

200 x 100 % = 12,3%

Spesimen 2

ε

=

∆�

� x 100% =

21,9

200 x 100 % = 10,95 %

Spesimen 3

ε

=

∆�

� x 100% =

22,3

200 x 100% = 11,15%

c. Variasi Arus 105 A Spesimen 1

ε

=

∆�

�x 100% =

20,2

200 x 100% = 10,1 %

Spesimen 2

ε

=

∆�

�x 100% =

21,3

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Lampiran 2

Arus L (mm) ∆L (mm) Lebar (mm) Tebal (mm) Luas A (mm2) Gaya F (N) σ (MPa) ε (%) E (MPa) 85 A 200 25.9 12.01 4.93 59.2093 20700 349.5 12.95 2698.8417 85 A 200 58.52 12.06 4.95 59.697 26400 442.28 29.26 1511.55161 85 A 200 29.5 12.05 4.93 59.4065 21600 363.63 14.75 2465.28814

rata-rata 385.1367 18.9867 2225.22715

95 A 200 52.4 12.55 4.95 62.1225 26600 428.2 26.2 1634.35115 95 A 200 40.88 12 4.94 59.28 24800 418.35 20.44 2046.72211 95 A 200 39.28 12.27 4.96 60.8592 24400 400.98 19.64 2041.64969

rata-rata 415.8433 22.0933 1907.57432

105 A 200 28.7 12.8 4.92 62.976 23000 365.25 14.35 2545.29617 105 A 200 24.34 12.56 4.8 60.288 21200 351.63 12.17 2889.318 105 A 200 32.16 12.55 4.98 62.499 26400 404.53 16.08 2515.73383

rata-rata 373.8033 14.2 2650.116

Perhitungan :

σ

=�

�=

20700 �

59,2093 ��2= 349,607 N/mm

2

Spesimen 2

σ

=�

�=

26400 �

59,697 ��2=442,233 N/mm

2

Spesimen 3

σ

=�

�=

21600 �

59,4065 ��2= 363,59 N/mm

2

σ

=�

�=

26600 �

62,1225 ��2= 428,186 N/mm

2

Spesimen 2

σ

=�

�=

24800 �

59,28 ��2= 418,353 N/mm

2

Spesimen 3

σ

=�

�=

24400 �

60,8592 ��2= 400,926 N/mm

(4)

σ

=�

�=

23000 �

62,976 ��2= 365,218 N/mm

2

Spesimen 2

σ

=�

�=

21200 �

60,288 ��2= 351,645 N/mm

2

Spesimen 3

σ

=�

�=

26400 �

65,26 ��2= 404,535 N/mm

2

ε

=

∆�

�x 100% =

25,9

200x 100 % = 12,95 %

Spesimen 2

ε

=

∆�

�x 100% =

58,52

200 x 100 % = 29,26 %

Spesimen 3

ε

=

∆�

� x 100% =

29,5

200 x 100 % = 14,75 %

ε

=

∆�

� x 100% =

52,4

200 x 100 % = 26,2%

Spesimen 2

ε

=

∆�

� x 100% =

40,88

200 x 100 % = 20,44 %

Spesimen 3

ε

=

∆�

� x 100% =

39,28

200 x 100% = 19,64%

ε

=

∆�

�x 100% =

28,7

200 x 100% = 14,35 %

Spesimen 2

ε

=

∆�

�x 100% =

24,34

(5)

Lampiran 3

Arus L (mm) ∆L (mm) Lebar (mm) Tebal (mm) Luas A (mm2) Gaya F (N) σ (MPa) ε (%) E (MPa) 85 A 200 17 12.05 4.86 58.563 15000 256.157 8.5 3013.61176 85 A 200 18.4 12.08 4.91 59.3128 17800 300.103 9.2 3261.98913 85 A 200 15.3 12.03 4.93 59.3079 13500 227.712 7.65 2976.62745

rata-rata 261.324 8.45 3084.07612

95 A 200 22.1 12.6 4.93 62.118 20000 321.872 11.05 2912.86878 95 A 200 20.8 12.32 4.89 60.2448 18900 313.691 10.4 3016.25962 95 A 200 21.4 12.29 4.97 61.0813 19600 320.8729 10.7 2998.81215

rata-rata 318.812 10.7167 2975.98018

105 A 200 21.1 12.41 4.92 61.0572 19500 319.384 10.55 3027.33649 105 A 200 20.9 12.34 4.94 60.9596 19100 313.335 10.45 2998.42105 105 A 200 27.9 12.96 4.96 64.2816 23400 364.021 13.95 2609.46953

rata-rata 332.2467 11.65 2878.40903

Perhitungan :

σ

=�

�=

15000 �

58,563 ��2= 256,134 N/mm

2

Spesimen 2

σ

=�

�=

17.800 �

59,312 ��2=300,107 N/mm

2

Spesimen 3

σ

=�

�=

13500 �

59,307 ��2= 227,629 N/mm

2

σ

=�

�=

20.000 �

62,118 ��2= 321,967 N/mm

2

Spesimen 2

σ

=�

�=

18900 �

60,244 ��2= 313,724 N/mm

2

Spesimen 3

σ

=�

�=

19600 �

61,081 ��2= 320,885 N/mm

(6)

σ

=�

�=

19500 �

61,057 ��2= 319,313 N/mm

2

Spesimen 2

σ

=�

�=

19100 �

60,959 ��2= 313,325 N/mm

2

Spesimen 3

σ

=�

�=

23400 �

64,281 ��2= 364,026 N/mm

2

ε

=

∆�

�x 100% =

17

200x 100 % = 8,5 %

Spesimen 2

ε

=

∆�

�x 100% =

18,4

200 x 100 % = 9,2 %

Spesimen 3

ε

=

∆�

� x 100% =

15,3

200 x 100 % = 7,65 %

ε

=

∆�

� x 100% =

22,1

200 x 100 % = 11,05%

Spesimen 2

ε

=

∆�

� x 100% =

20,8

200 x 100 % = 10,4 %

Spesimen 3

ε

=

∆�

� x 100% =

21,4

200 x 100% = 10,7%

ε

=

∆�

�x 100% =

21,1

200 x 100% = 10,55 %

Spesimen 2

ε

=

∆�

�x 100% =

20,9