COMPARISON OF DIFFERENT STRENGTH GRADES |
|
|
I.S. |
ULTIMATE TENSILE STRENGTH RANGE |
HARDNESS |
SAE |
B.S. |
I.S.O. |
(Kgf/mm2 ) |
Newtons/mm2 |
Pounds/inch2
(P.S.I.) |
BHN |
HRB |
HRC |
|
|
DIN |
|
|
|
|
|
4.6 |
40.8/81.5 |
400/800 |
58000/116400 |
114 |
67 |
|
|
|
|
|
|
|
238 |
99.5 |
|
GRADE |
|
|
42.2/81.5 |
414/800 |
59000/116400 |
(121) |
70 |
|
1 |
|
|
|
|
|
(241) |
100 |
|
|
|
4.8 |
42.8/81.5 |
420/800 |
59000/116400 |
124 |
71 |
|
|
|
|
|
|
|
238 |
99 |
|
|
|
5.6 |
51/81.5 |
500/800 |
72000/116400 |
147 |
79 |
|
|
|
|
|
|
|
238 |
99 |
|
GRADE |
|
|
51.3/81.5 |
502/800 |
72000/116400 |
(150) |
80 |
|
2 |
|
|
|
|
|
(241) |
100 |
|
|
|
5.8 |
53/81.5 |
520/800 |
75000/116400 |
152 |
82 |
|
|
|
|
|
|
|
238 |
99.5 |
|
|
P |
|
55/81.5 |
579/800 |
75000/116400 |
152 |
82 |
|
|
|
|
|
|
|
240 |
99.5 |
|
|
|
6.8 |
61/81.5 |
600/800 |
87000/116400 |
181 |
89 |
|
|
|
|
|
|
|
238 |
99.5 |
|
|
R |
|
71/98 |
696/965 |
101500/140000 |
201 |
93 |
|
|
|
|
|
|
|
285 |
|
30 |
|
S |
|
79/108 |
770/1060 |
112100/154200 |
223 |
|
(20/33) |
|
|
|
|
|
|
310 |
|
|
|
|
8.8 |
81.6/106 |
800/1040 upto M16 |
116500/150000 |
238/304 |
|
22/32 |
|
|
|
84.6/111 |
830/1090 above M16 |
120800/158600 |
242/318 |
|
23/34 |
GRADE |
|
|
87/111 |
852/1090 |
124000/158500 |
253 |
|
|
5 |
|
|
|
|
|
318 |
|
25/34 |
|
T |
|
86/115 |
840/1127 |
123000/164000 |
247/335 |
-- |
24/36 |
|
U |
|
93/115 |
916/1127 |
132000/164000 |
271/335 |
|
28/36 |
|
V |
|
101/128 |
995/1255 |
144000/182000 |
295/370 |
|
31/40 |
GRADE |
|
|
108/124 |
1060/1220 |
154000/177000 |
312 |
|
|
8 |
|
|
|
|
|
362 |
|
(33/39) |
|
|
10.9 |
106/124 |
1040/1220 |
156000/177000 |
304 |
|
|
|
|
|
|
|
|
362 |
|
(32/39) |
|
W |
|
108/132 |
1060/1293 |
154000/190000 |
312 |
|
|
|
|
|
|
|
|
381 |
|
(33/41) |
|
X |
|
118/146 |
1156/1430 |
169000/210000 |
341 |
|
|
|
|
|
|
|
|
410 |
|
(37/44) |
|
|
12.9 |
124/146 |
1220/1430 |
177000/210000 |
362 |
|
|
|
|
|
|
|
|
410 |
|
(39/44) |
|
Y |
|
124/151 |
1220/1484 |
177000/216000 |
362 |
|
|
|
|
|
|
|
|
432 |
|
(39/46) |
|
Z |
|
148/166 |
1455/1630 |
210000/237100 |
425/475 |
|
(45/49) |
|