Alloy Designation C Mn Si Mo V Al Ti N B 1.1Mn 0.15 1.1 0.25 - - 0.03 0.01 0.002 0.002 1.1Mn -0.1V 0.15 1.1 0.25-0.1 0.03 0.01 0.002 0.002 0.6Mn 0.15 0.6 0.25 - - 0.03 0.01 0.002 0.002 0.6Mn -0.2Mo 0.15 0.6 0.25 0.2-0.03 0.01 0.002 0.002
Interrupted Accelerated Cooling (5 o C /s cooling to 550 o C) Alloy Designation (Ar3) Rolling Condition UTS (MPa) Tensile Properties YS EL (MPa) (%) YR (YS/UTS) Impact Energy at-20 o C (J) 800/4p 495 361 29.3 0.73 356 800/6p 503 365 29.1 0.73 338 1.1Mn (756 o C) 770/4p 770/6p 495 499 365 372 31.5 27.6 0.74 0.75 290 247 800/2p 770/4p 531 401 30.8 0.76 300 800/4p 552 383 28.1 0.69 266 1.1Mn-0.1V (754 o C) 800/6p 770/4p 541 538 402 401 28.5 30.0 0.74 0.75 284 223 770/6p 584 370 26.3 0.63 157 0.6Mn (787 o C) 800/4p 800/6p 447 471 306 328 28.5 29.8 0.68 0.7 258 142 0.6Mn-0.2Mo (775 o C) 800/4p 800/6p 534 531 368 365 31.1 25.5 0.69 0.69 297 299
IACC : 1.1Mn(A) / 1.1Mn - 0.1V(B) UTS YS El. 700 70 600 60 500 50 Strength (MPa) 400 300 200 40 30 20 Elongation (%) 100 0 A B 800/4p 800/6p 770/4p 770/6p 800/2p, 770/4p Rolling Condition 10
IACC : 0.6Mn(A) / 0.6Mn - 0.2Mo(B) 700 A UTS YS El. 70 600 60 500 50 Strength (MPa) 400 300 200 40 30 20 Elongation (%) 100 0 A B 800/4p 800/6p 10 0 Rolling Condition
400 IACC : 1.1Mn / 1.1Mn-0.1V 1.1Mn CVN Impact Energy (J) 300 200 800/4p : 1.1Mn 800/6p : 1.1Mn 770/4p : 1.1Mn 770/6p : 1.1Mn 800/2p,770/4p : 1.1Mn 800/4p : 1.1Mn-0.1V 800/6p : 1.1Mn-0.1V 770/4p : 1.1Mn-0.1V 770/6p : 1.1Mn-0.1V 1.1Mn-0.1V 100 300 400 500 600 700 Tensile Strength (MPa)
CVN Impact Energy (J) 400 350 300 250 200 150 100 800/4p : 1.1Mn 800/6p : 1.1Mn 770/4p : 1.1Mn 770/6p : 1.1Mn 800/2p,770/4p : 1.1Mn 800/4p : 1.1Mn-0.1V 800/6p : 1.1Mn-0.1V 770/4p : 1.1Mn-0.1V 770/6p : 1.1Mn-0.1V IACC : 1.1Mn / 1.1Mn-0.1V 50 0-100 -80-60 -40-20 Temperature ( o C)
CVN Impact Energy (J) 400 300 200 100 800/4p : 0.6Mn 800/6p : 0.6Mn 800/4p : 0.6Mn-0.2Mo 800/6p : 0.6Mn-0.2Mo IACC : 0.6Mn / 0.6Mn-0.2Mo 0.6Mn 0 300 400 500 600 Tensile Strength (MPa)
IACC : 0.6Mn / 0.6Mn-0.2Mo 300 250 800/4p : 0.6Mn 800/6p : 0.6Mn 800/4p : 0.6Mn-0.2Mo 800/6p : 0.6Mn-0.2Mo CVN Impact Energy (J) 200 150 100 50 0-100 -80-60 -40-20 Temperature ( o C)
Accelerated Cooling (10 o C /s) Alloy Designation (Ar3) Rolling Condition UTS (MPa) Tensile Properties YS EL (MPa) (%) YR (YS/UTS) Impact Energy at-20 o C (J) 800/4p 463 316 27.5 0.68 221 0.6Mn (787 o C) 800/6p 770/4p 469 476 315 329 26.6 30.2 0.67 0.70 117 138 770/6p 504 370 25.4 0.73 115 800/4p 564 400 26.5 0.71 299 0.6Mn-0.2Mo (775 o C) 800/6p 770/4p 584 583 402 439 25.6 25.2 0.69 0.75 227 226 770/6p 630 461 26.1 0.73 168 1.1Mn (756 o C) 750/4p 524 394 27.4 0.75 37 1.1Mn-0.1V (754 o C) 750/4p 750/6p 551 685 397 479 23.3 17.6 0.72 0.70 20 50
ACC : 0.6Mn(A) / 0.6Mn - 0.2Mo(B) UTS YS El. 700 70 600 60 500 50 Strength (MPa) 400 300 200 40 30 20 Elongation (%) 100 0 A B 800/4p 800/6p 770/4p 770/6p Rolling Condition 10 0
ACC : 1.1Mn(A) / 1.1Mn - 0.1V(B) UTS YS El. 700 70 600 60 500 50 Strength (MPa) 400 300 200 40 30 20 Elongation (%) 100 0 750/4P 750/6P A B 10 0 Rolling Condition
CVN Impact Energy (J) 350 300 250 200 150 100 50 800/4p : 0.6Mn 800/6p : 0.6Mn 770/4p : 0.6Mn 770/6p : 0.6Mn 800/4p : 0.6Mn-0.2Mo 800/6p : 0.6Mn-0.2Mo 770/4p : 0.6Mn-0.2Mo 770/6p : 0.6Mn-0.2Mo ACC : 0.6Mn / 0.6Mn-0.2Mo 0.6Mn 0.6Mn-0.2Mo 0 300 350 400 450 500 550 600 650 Tensile strength (MPa)
ACC : 0.6Mn / 0.6Mn-0.2Mo CVN Impact Energy (J) 300 250 200 150 100 800/4p : 0.6Mn 800/6p : 0.6Mn 770/4p : 0.6Mn 770/6p : 0.6Mn 800/4p : 0.6Mn-0.2Mo 800/6p : 0.6Mn-0.2Mo 770/4p : 0.6Mn-0.2Mo 770/6p : 0.6Mn-0.2Mo 50 0-100 -80-60 -40-20 Temperature ( o C)
ACC : 1.1Mn /1.1Mn-0.1V CVN Impact Energy (J) 80 70 60 50 40 30 20 10 750/4p : 1.1Mn 750/4p : 1.1Mn-0.1V 750/6p : 1.1Mn-0.1V 1.1Mn-0.1V 0 400 500 600 700 Tensile Strength (MPa)
ACC : 1.1Mn / 1.1Mn-0.1V CVN Impact Energy (J) 50 40 30 20 10 750/4p : 1.1Mn 750/4p : 1.1Mn-0.1V 750/6p : 1.1Mn-0.1V 0-100 -80-60 -40-20 Temperature ( o C)
(a) 770/6p IACC (b) 800/6p IACC 50µm (c) 800/2p, 770/4p IACC (d) 750/4p ACC
(a) 770/6p IACC (b) 800/6p IACC (c) 800/2p 770/4p IACC (d) 750/4p ACC
(a) 770/6p IACC 50µm (b) 800/6p IACC (c) 750/6p ACC
(a) 770/6p IACC (b) 800/6p IACC (c) 750/6p ACC
(a) 800/4p IACC (b) 770/4p ACC 50µm (c) 800/4p IACC (d) 770/4p ACC
(a) 800/6p ACC (b) 770/6p ACC 50µm (c) 800/6p ACC (d) 770/6p ACC
-100 0 C -80 0 C -60 0 C -40 0 C -20 0 C 1.1Mn (a) 800/2p-770/4p 1.1Mn-0.1V(b) 750/6p
-100 0 C -80 0 C -60 0 C -40 0 C -20 0 C 0.6Mn-0.2Mo(a) 800/6p 0.6Mn(b) 800/6p
(a) 800/2p, 770/4p IACC (b) 800/6p ACC (c) 800/6p IACC (d) 800/6p ACC