Alloys with high resistance to stress-corrosion cracking
The data given here is for information only.
This table is divided according to the type of alloy.
These types are : Steel alloys, Nickel alloys, Aluminium alloys, Copper alloys and Miscellaneous alloys
Table I - Steel Alloys
Alloy | Condition | Carbon steel(1000 series)
Low alloy steel(4130,4340 ESTEC)
(E) D6AC, H-11
Music wire(ASTM 228)
HY-80 steel
HY-130 steel
HY-140 steel
1095 spring steel
300 series
stainless steel(unsensitised)2
400 series Ferritic stainless steel (404,430,444,etc)
21-6-9 stainless steel
Carpenter 20 CB Stainless steel
Carpenter 200 CB-3 stainless steel
A286 stainless steel
AM350 stainless steel
AM355 stainless steel
Almar 362 stainless steel
Custom 450 stainless steel
Custom 455 stainless steel
15-5 pH stainless steel
PH 14-8 Mo stainless steel
PH 15-7 Mo stainless steel
17-7 PH stainless
steel
Nitronic 33 (3)
(E) Maraging steel MARVAL X12 | Below 125 kg/mm2; (180 ksi) UTS
Below 125 kg/mm2; (180 ksi) UTS (1)
Below 148 kg/mm2; (210 ksi) UTS
Cold drawn
Quenched and tempered
Quenched and tempered
Quenched and tempered
Quenched and tempered
All
All
All
All
All
All
SCT
1000(4) and above
SCT 1000 and above
H1000(5) and above
H1000 and above
H1000 and above
H1000 and above
CH900 and SRH950 and above (6,7)
CH900
CH900
All
All |
1) A small number of laboratory failures of specimens cut from plate more than 2 inches thick have been observed at 75% yield, even
within this ultimate strength range. The use of thick plate should therefore be avoided in a corrosive environment when sustained tensile stress in the short transverse direction is expected.
2) Including weldments of 304L, 316L, 321 and 347.
3) Including weldments.
4) SCT 1000 = subzero cooling and tempering at 538°C (1000F)
5) H1000 = hardened above 538C (1000F)
6) CH900 = cold worked and aged at 480C (1000;F)
7) SRH950 = solution treated and tempered at 510C (950F)
(E) ESA classification - not in NASA MSFC-SPEC-522A
Table I - Nickel Alloys
Alloy | Condition | Hastelloy C
Hastelloy X
Incoloy 800
Incoloy 901
Incoloy 903
Inconel 600 (3)
Inconel 625
Inconel 718 (3)
Inconel X-750
Monel K-500
NiSpan-C 902
Rene 41
Unitemp 212
Waspaloy | All
All
All
All
All
Annealed
Annealed
All
All
All
All
All
All
All
|
3) Including weldments
Table I - Aluminium Alloys
Alloy, Wrought (1,2) |
Condition | Alloy, Cast (3) | Condition | 1000 series
2011
2024,
rod bar
2219
(E) 2419
(E) 2618
3000 series
5000 series
6000 series
(E) 7020
7049
7149
7050
7075
7475 | All
T8
T8
T6, T8
T8
T6, T8
All
All (4,5)
All
T6 (6)
T73
T73
T73
T73
T73 | 355.0, C355.0
356.0, A356.0
357.0
B358.0 (Tens-50)
359.0
380.0, A380.0
514.0 (214)
518.0 (218)
535.0 (Almag 35)
A 712.0, C 712.0
| T6
All
All
All
All
As cast
As cast (5)
As cast (5)
As cast (5)
As cast
|
1) Mechanical stress relieved (TX5X or TX5XX) where possible
2) Including weldments of the weldable alloys.
3) The former designation in shown in parenthesis when significantly different.
4) High magnesium content alloys 5456, 5083 and 5086 should be used only in controlled tempers (H111, H112, H116, H117, H323, H343) for resistance to stress-corrosion cracking and exfoliation
5) Alloys with magnesium content greater than 3.0% are not recommended for high temperature application, 66C (150F) and above.
6) Excluding weldments.
(E) ESA classification - not in NASA MSFC-SPEC-522A
Table I - Copper Alloys
CDA no (1) |
Condition (% cold rolled) (2) | 110
170
172
194
195
230
422
443
510
521
619
619
688
706
725
280, 524, 606, 623, 655, 704, 710
715, (E) 917, (E) 937 | 37
AT, HT (3)
AT, HT (3)
37
90
40
37
10
37
37
40(9% B phase)
40(95% B phase)
40
50
50, annealed
0
0
|
1) Copper Development Association alloy number
2) Maximum per cent cold rolled for which stress-corrosion cracking data are available
3) AT = annealed and precipitation hardened, HT = work hardened and precipitation hardened
Table I - Miscellaneous Alloys
Alloy | Condition | Beryllium, S-200C
HS 25 (L605)
HS 188
MP35N
Titanium 3Al-2.5V
Titanium 6Al-4V
Titanium 13V-11Cr-3Al
(E) Titanium IMI 685, IMI 829
Magnesium, M1A
Magnesium, LA141
Magnesium, LAZ933
(E) Cast alloy Magnesium ELEKTRON 21 | Annealed
All
All
All
All
All
All
All
All
Stabilized
All
T6 |
(E) ESA classification - not in NASA MSFC-SPEC-522A | |
