Steels_ Metallurgy and Applications, Third Edition

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Table 4.14 The compositions and mechanical properties of fem‘tic steels for use at low temperatures


me Condition DesigMtion Composition Mechanical pmpertics a 2WC
C Mn Si Mo Nb Ni Cr ?ieU Tmile Elongation Cham
(96) (%) (%) (W (46) (%) (5%) smngrh strength (gauge V-notch
@@a) (MPa) length inpacttest
5.65 JSo) tempemd
(%) (‘C)

C-Mn
semi-killed
C-MU-Nb
Semi-killed


C-Mn-Nb
silicon killed
C-Mn
silicon killed,
finem
Ni-Cr-Mo


23% Ni


31% Ni


9% Ni


As mlled

Normalired

Normalized

Normalized

Quenched
and
tempend
Normalized

Normalized
and
tempexed
Double
normalired
and tempad
As welded
with
Ni-Cr-Fe
(Inconel 92)
elechDde5

BS grade4OC

BS grade4OD
4360: grade 43D

BS gnde50D
4360:
BS gradc4OE


  1. gnde 43E
    grade 55E
    BSC QT 445
    ASTM A517
    Gd F (USS T1)
    ASTM A203
    GdA
    BS 1501/503
    ASTM A203
    Gd D
    BS 1501/509


4360: grade 43c

grade 5oc

ASTM code
Case 1308 and
A353

0.22 1.6
0.22 1.6
0.19 1.6
0.19 1.6
0.24 1.6 0-0.55

0.1
0.1
0.1
0.22 1.6 0.1-0.55 0.1

260 400-480
280 430-510
260 400-480
280 430-510
355 490-620
355 490-620
0.19 1.6 0.1-0.55 260 400-480
0.19 1.6 0.1-0.55 280 430-510
0.26 1.7 0-0.65 0.1 450 550-700
0.1-0.2 0.6-1 0.15-0.35 0.4-0.6 0.7-1 0.4-0.65 690 795-930

0.17-0.23 0.7-0.8 0.15-0.3 2.1-25 255 450

0.17 -0.2 0.7 -0.8 0.15 -0.3 3.25-3.75 255 450

515 690

0.13 0.9 0.13-0.32 8.4-9.6 480 655

25
22
25
22
20
20

25
22
19
18

25

22

22





0
0
-20
-20
-15
-30

-50
-50
-50
-45

-60

-100


  • 1%


-1%

“The impact test temperature is that laid down by the relevant standards for quality control purposes. This does not guarantee that the steel, especially if used in thick
sections, will be completely satisfactory for use at low temperams.
After wigIey.3l

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