Alloy 4140 in plate
SPECIFICATIONS:
Castle Metals stocks a wide range of Alloy 4140 plate distributed globally from our distribution centers in the U.S., Canada, Mexico, U.K, Singapore, and Shanghai. When our phone rings with 4140 plate inquiries, many customers also tell us they are overwhelmed with supply chain complexity. Where it makes sense, Castle Metals can simplify our customers' inbound network and reduce our customers' total cost of ownership.
Alloy 4140 (AISI 4140) is one of the most popular direct hardening Cr-Mo alloy steel plates that have the ability to develop an extensive range of hardness and strength. Alloying elements and thermal treatments, such as quenching and tempering, greatly influence the hardness and strength of the steel.
Alloy 4140 plate is widely used for general purpose industrial machining. Welding and forming of this steel plate should be avoided. It is best utilized wherever high resistance to fatigue and or impact is necessary.
Tube Properties
Grade 4140 Oil & Gas Chemistry
Grade | Size range |
c |
mn |
pmax |
s |
si |
ni |
cr |
mo |
cu |
al |
P110 |
1.5" - 7" |
3.8/.43 |
.75/1.00 |
0.025 |
0.02 |
.15/.35 |
0.25 |
.80/1.10 |
.15/.25 |
0.35 |
0.02 |
>7" - 12" |
.15/.30 |
||||||||||
4140 Hot Rolled & Annealed |
All |
.40/.43 |
.75/1.00 |
0.02 |
0.025 |
.15/.30 |
0.25 |
.80/1.10 |
.15/.25 |
0.35 |
- |
L80 |
All |
.40/.43 |
.75/1.00 |
0.025 |
0.025 |
.15/.30 |
.0.25 |
.80/1.00 |
.15/.25 |
0.35 |
- |
Grade 4140 Oil & Gas Properties
grade | Shape | Size range |
condition of steel |
specification |
P110 |
Rounds |
1.5" - 7" |
Hot Rolled, Quenched & Tempered - 341 HBW MAX AT SURFACE |
ASTM A29/A322 |
>7" - 12" |
Hot Rolled, Quenched & Tempered - 341 HBW MAX 1" BELOW SURFACE |
|||
Tubing | 2" - 20" |
Hot Rolled, Quenched & Tempered |
ASTM A519 |
|
4140 |
Rounds |
1" - 12" |
Annealed - 229 HBW MAX |
ASTM A29/A322 |
Tubing |
2" - 20" |
Hot Rolled |
ASTM A519 |
|
L80 |
Rounds |
2" - 12" |
Hot Rolled, Quenched & Tempered |
ASTM A29/A322 |
Tubing |
2" - 20" |
Hot Finished, Quenched & Tempered |
ASTM A519 |
Castle 4140 Oil & Gas products - minimum mechanical properties:
Grade |
Shape | Tensile- ksi |
yield- ksi |
elongation- % |
red. of area- % |
P110 |
Rounds |
125 |
110 | 13 |
35 |
140 Mid-Radius | |||||
Tubing | 125 | 110 | 13 | 13 | |
L80 |
Rounds | 100 Min 1" below surface | 95 | 20 | 40 |
Tubing | 95 | 80 | 20 | 16 | |
4140 Hot Rolled & Annealed |
Rounds | 125 | 105 | 30 | 60 |
Tubing | 80 | 60 | 25 | 25 |
For more information, see The Oil and Gas Industry's Premier Source for Bar and Tubing Products & Carbon and Alloy Tubing Quick Guide
Chemistry(range or Maximum in %)
Chemistry (range or Maximum in %)
Grade | Thickness | C |
Mn | P |
S |
Si |
Ni |
Cr |
Mo |
AISI 4140 |
1/4" thru 14" | .36/.44 | .70/1.00 | 0.035 | 0.04 | .15/.40 | - | .80/1.15 | .15/.25 |