|
AISI SAE |
UNS No. |
C |
Mn (max) |
P (max) |
S (max) |
Si |
Cr |
Mo |
Hardness |
Tensile Strength |
Yield Strength |
|
4140 Steel Plate
&
Steel Bar |
G41400 |
0.38 - 0.43 |
0.75 - 1.0 |
0.035 |
0.04 |
0.15 - 0.30 |
0.8 - 1.1 |
0.15 - .25 |
Bhn 195+
RC 22+ |
98ksi + |
58ksi + |
4140 PH or
4140 PREHARD has the same industry standard chemistry as
above.
4140 Steel Bar
Oil Quenched & Tempered 4140 PH has a standard, industry
recognized Rockwell C Hardness rating of 28 - 32.
Most sources recognize and tend to prefer quoting and
requesting the Rockwell C Scale. 4140PH ranges from Brinell Hardness 270 - 300.
Thick 4140 AN (in the Annealed condition) is flame cut, then Annealed onsite in our furnace. Annealing greatly improves
Grinding and Machining. Parts can be returned to the standard hardness when followed by a
Normalize & Specific Tempering heat treatment process.
Plate Cutting
Annealing
Grinding
CNC Machining
Steel Fabrication |
Typical Applications:
Tooling, machine plates, gears, shafts, sprockets,
Special Machine Parts
Molds, Metal Stamping, Tool & Die, Shredders
Automotive, Oil & Gas Industries, Machine Shop, Paper Mills |
1-888-WE-GRIND
1-205-942-2491 office
1-205-942-2073 FAX
mail@precisiongrinding.com |
 |
 |
|
 |
 |
| Flame Cutting·Plasma Beveling |
Precision Grinding
4140 Plate |
|
CNC Machining Steel Parts |
CNC Machining 4140 Alloy Plate |
|
Hardening Properties
Purchased as Normal
HR (hot-roll), Pre-Hardened PH, or in the AN
Annealed condition, this chromium molybdenum alloy steel
possesses a full range of hardening and wear resistance
properties. Combinations of Flame hardening, induction hardening, or oil hardening can considerably increase the
wear resistance of the finished ground and machined parts.
Quenching, Normalizing & tempering processes can increase
the hardness to the desired level.
4140 Annealing & Stress
Relieving
With proper furnace heating techniques, AISI 4140 maintains its properties
through exposure to the relatively high heating temperatures during
annealing or stress relieving. With an on-site 8' x 8' x 14' car-bottom furnace, Precision Grinding anneals parts cut
from 4140 every week. We operate the oven every day of the
week, M-F, and heat records are stored for every batch of
parts that enter our oven.
Machinability
Parts cut from AISI 4140
Steel are often machined in the Annealed condition, providing for
easier machineability.
Welding Properties
AISI 4140 Steel can be welded,
providing the section is preheated during welding, then
stress relieved after welding.
Types of
Machined Steel Shapes Manufactured from 4140 plate
Base plates,
machine bases,
die plates,
die shoes, gears,
steel molds,
platens,
sprockets, liners &
wear plates |
4140 Steel Plate Inventory /
4140 Bar
Precision Grinding maintains a
large inventory of AISI 4140 in full sheets, 96" x 240" in Standard
thicknesses ranging from 1/4" - 4", with
Availability to
14" thick. We cut, grind, and machine steel parts to
your custom specifications.
| Grade |
Fractional Inches |
Decimal Inches |
Grade |
Fractional Inches |
Decimal Inches |
| 4140 |
0.375" |
3/8" |
4140 |
1.5" |
1 1/2" |
| 4140 |
0.5" |
1/2" |
4140 |
1.75" |
1 3/4" |
| 4140 |
0.625" |
5/8" |
4140 |
2.0" |
2" |
| 4140 |
0.75" |
3/4" |
4140 |
2.25" |
2 1/4" |
| 4140 |
0.875" |
7/8" |
4140 |
2.5" |
2 1/2" |
| 4140 |
1.0" |
1" |
4140 |
3.0" |
3" |
| 4140 |
1.125" |
1 1/8" |
4140 |
3.5" |
3 1/2" |
| 4140 |
1.25" |
1 1/4" |
4140 |
4.0" |
4" |
In addition,
In-stock inventory includes:
Hot Rolled Carbon Steel Plate & Alloy Plate, Structural Tube, 4140 Bar
| ** All of these grades are available in heavier thicknesses. A36 to 24". A514 to 8". 1045 to 14". 4140 to
14". 1020 to 20". A572 to 6". |
At Precision Grinding, Inc., Birmingham, AL, we manufacture
steel plate products and shapes, virtually
any size.
Our steel processing services include:
PLATE CUTTING : Three (480" plus) full sheet cutting tables. Flame Burning and Plasma Burning capacity.
ANNEALING & STRESS RELIEF OVEN : 8' x 8' x 14' capacity
BLANCHARD GRINDING : 3 Large Blanchard Rotary Grinding tables. 2
Large Mattison Reciprocal Grinders.
LARGE SURFACE GRINDING : 2 Large Mattison Surface Grinders. Max
capacity 36"w x 172"l
CNC MACHINING : G&L Mills to 84"h x 60"w x 136" l and CNC
Machine Center Table to 31"h x 78"w x 122" l
STEEL FABRICATION : Continuous Stream Welding, Burning,
Assembly, Special Machine Building, Weldments.
We offer a complete line of
steel processing services. Please, call us at
1-888-934-7463
with your next steel plate request.
| Convenient to I-65 S and
I-459, Birmingham, Alabama USA |
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Copyright February 2, 2009 Precision Grinding, Inc. All Rights Reserved. |
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