Ambient temperature mechanical properties of stainless steels to BS EN 10269
Introduction
BS EN 10269 is the material standard for stainless and heat-resisting steels, a selection of low alloy steels and some nickel alloys for fasteners. The ambient temperature mechanical properties shown in this article include 0.2% proof strength, tensile strength, elongation, reduction in area and impact (charpy) strength in the finally heat treated condition. Specified hardness levels for the steels for subsequent quenching and tempering (1.4923 1.4938 and 1.4913) in their delivery condition are also included in a separate table. The final heat treatment conditions for each grade are also tabulated.
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The data given is not intended to replace that shown in individual standards to which reference should always be made.
Mechanical properties at room (ambient) temperature for steels supplied in a delivery conditions
| Designation |
Heat treatment condition |
Brinell hardness HB max |
| Steel name |
Steel number |
| X22CrMoV12-1 |
1.4923 |
A |
302 |
| X12CrNiMoV12-3 |
1.4938 |
A |
311 |
| X19CrMoNbVN11-1 |
1.4913 |
A |
302 |
Mechanical properties at room (ambient) temperature for steels in their final treatment condition
| Steel name |
Steel number |
Condition |
Max dia. mm |
Rp (1) |
Rm (2) |
El (3) |
Z (4) |
KV (5) |
| Steels for quenching and tempering |
| X22CrMoV12-1 |
1.4923 |
QT1 |
160 |
600 |
800/950 |
14 |
40 |
27 |
| QT2 |
160 |
700 |
900/1050 |
11 |
35 |
20 |
| X12CrNiMoV12-3 |
1.4938 |
QT |
160 |
760 |
930/1130 |
14 |
40 |
40 |
| X19CrMoNbVN11-1 |
1.4913 |
QT |
160 |
750 |
900/1050 |
12 |
40 |
20 |
| Austenitic steels |
| X2CrNi18-9 |
1.4307 |
AT |
160 |
175 |
450/680 |
45 |
– |
100 |
| C700 |
35 |
350 |
700/850 |
20 |
– |
80 |
| C800 |
25 |
500 |
800/1000 |
12 |
– |
80 |
| X5CrNi18-10 |
1.4301 |
AT |
160 |
190 |
500/700 |
45 |
– |
100 |
| C700 |
35 |
350 |
700/850 |
20 |
– |
80 |
| X4CrNi18-12 |
1.4303 |
AT |
160 |
190 |
500/700 |
45 |
– |
100 |
| C700 |
35 |
350 |
700/850 |
20 |
– |
80 |
| C800 |
25 |
500 |
800/1000 |
12 |
– |
80 |
| X2CrNiMo17-12-2 |
1.4404 |
AT |
160 |
200 |
500/700 |
40 |
– |
100 |
| C700 |
35 |
350 |
700/850 |
20 |
– |
80 |
| C800 |
25 |
500 |
800/1000 |
12 |
– |
80 |
| X5CrNiMo17-12-2 |
1.4401 |
AT |
160 |
200 |
500/700 |
40 |
– |
100 |
| C700 |
35 |
350 |
700/850 |
20 |
– |
80 |
| C800 |
25 |
500 |
800/1000 |
12 |
– |
80 |
| X2CrNiMoN17-13-3 |
1.4429 |
AT |
160 |
280 |
580/800 |
40 |
– |
100 |
| X3CrNiCu18-9-4 |
1.4567 |
AT |
160 |
175 |
450/650 |
45 |
– |
100 |
| C700 |
35 |
350 |
700/850 |
20 |
– |
80 |
| X6CrNi18-10 |
1.4948 |
AT |
160 |
185 |
500/700 |
40 |
– |
90 |
| X10CrNiMoMnNbVB15-10-1 |
1.4982 |
AT + WW |
100 |
510 |
650/850 |
25 |
– |
50 |
| X3CrNiMoBN17-13-3 |
1.4910 |
AT |
160 |
260 |
550/750 |
35 |
– |
100 |
Guidance for Heat Treatment
| Steel number |
H T Symbol |
Quench/anneal (1) |
Cooling (2) |
Temper (3) |
| 1.4923 |
QT1 |
1020/1070 |
a,o,w |
680/740 |
| QT2 |
1020/1070 |
a,o,w |
660/720 |
| 1.4938 |
QT |
1035/1062 |
o |
600/670 |
| 1.4913 |
QT |
1100/1130 |
a,o |
670/720 |
| 1.4307, 1.4301, 1.4303, 1.4567 |
AT |
1000/1100 |
w,a |
– |
| 1.4404, 1.4401, 1.4429, |
AT |
1020/1120 |
w,a |
– |
| 1.4948 |
AT |
1000/1080 |
w,a |
– |
| 1.4982 |
AT + WW |
1030/1070+650/750 |
w+a |
– |
| 1.4910, 1.4919 |
AT |
1020/1100 |
w,a |
– |
| 1.4941 |
AT |
1070/1150 |
w,a |
– |
| 1.4980 |
AT + P |
970/990 |
o,w |
710/730 |
| 1.4986 |
WW + P |
WW at 750/850 |
– |
750/800 |
Notes
(1) Quenching or solution annealing temperature C
(2) Type of cooling a – air ; o – oil ; w – water
(3) Tempering or precipitation treatment temperature C
AT – solution annealed QT – quenched and tempered P – precipitation hardened WW – warm worked
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