ASTM A320 Grade L7 / ASTM A193 B7 is a material specification chromium-molybdenum steel, used for manufacturing fittings for various process industries across major industrial sectors in low temperature applications services.
TM Steels can provide all materials produced to bespoke customer requirements. We project manage your raw material or semi finished material requirements, including Sawing, Heat Treatment, Testing, Rough Machining, Hardness Testing, Ultrasonic Examination and certification, including BS EN 10204 3.1 & BS EN 10204 3.1 Witness documentation packages. We use an approved list of European Mills, and can offer material with PED / REACH & ROHS approval & UKAS accredited Testing. Contact our sales team today if you would like to enquire about our ASTM A320 L7 / ASTM A193 B7 Stock Lines.
|
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Cu |
Ni |
|
Min |
0.39 |
0.15 |
0.75 |
|
|
0.80 |
0.15 |
|
|
|
Max |
0.43 |
0.35 |
1.00 |
0.03 |
0.03 |
1.10 |
0.25 |
0.35 |
0.25 |
|
Tensile |
Result |
|
RP 0.2% |
105,000 PSI MIN |
|
RM |
>125,000 PSI MIN |
|
% Elongation |
16% |
|
Reduction of Area |
50% |
|
HBW10/3000 |
255-321 BHN |
|
KCV @ -101 DEG C ⌀ 4” < |
27J MIN AVE, 20J MIN SINGLE VALUE |
SURFACE CONDITION
Peeled / Smooth Turned Bar.
REDUCTION RATIO
4:1 Min (INGOT CAST)
STRUCTURE
Grain size will be ASTM 5 or finer.
ULTRASONIC EXAMINATION
Ultrasonic examination available per ASTM A388/API6A Latest Edition or to bespoke customer specification.
Rolled / Peeled Bar
Heat Treated
16mm – 152.4mm ⌀
UNS G41400 SAE 4140 SCM440 Wr.No / EN 1.7225 42CrMo4