EN19 SCM440 4140 Hardened and Tempered Steel Round Bar
SAE 4140 Scorching rolled Q&T metal spherical bars made in China
one.Equivalent CZPTs
| GB,YB | JIS | DIN(W-Nr.) | ASTM | BS | NF |
| 42CrMo | SCM440/(SCM4) | 42CrMo4-one.7225 | 4140 | 708M40/709M40/708A42/EN19 | 42CD4 |
two.Chemical composition of 4140 steel
| CZPT | Quality | C | Si | Mn | P | S | Cr | Mo |
| ASTM A29 | 4140 | .38-.forty three | .fifteen-.35 | .seventy five-1.00 | ≤ .035 | ≤ .04 | .8-one.one | .fifteen-.twenty five |
| 42CrMo4 | .38-.forty five | ≤ .4 | .six-.90 | ≤ .571 | ≤ .035 | .nine-1.two | .15-.30 | |
| EN10083 | one.7225 | |||||||
| JIS G4105 | SCM440 | .38-.forty three | .fifteen-.35 | .six-.eighty five | ≤ .035 | ≤ .04 | .9-one.2 | .fifteen-.thirty |
| GB 3077 | 42CrMo | .38-.forty five | .17-.37 | .five-.80 | ≤ .035 | ≤ .035 | .nine-one.2 | .15-.twenty five |
| BS 970 | EN19 | .35-.forty five | .15-.35 | .5-.eighty | ≤ .035 | ≤ .035 | .9-1.5 | .2-.40 |
three.Warmth treatment of 4140 scm440 en19
Forging
Can be heated to 1150°C and managed till uniform
Minimal forging temperature 850°C
Can be cooled slowly in sand or ash
Anxiety Relieving
Hardened: Heat to 500°C – 550°C
Annealed: Heat to 600°C – 650°C
Great in still air
Annealing
Warmth to 830°C – 850°C
Furnace awesome
Normalizing
Warmth to 870°C – 900°C
Great in even now air
Nitriding
Warmth to 500°C – 530°C and hold for enough time to develop the depth of circumstance necessary
Areas need to be pre-hardened and tempered as essential and also pre-machined leaving a small grinding allowance only.
Tempering
Heat to 450°C – 700°C amazing in even now air
Tempering in the variety of 200°C – 420°C triggers mood brittleness and ought to be averted
Flame and Induction Hardening
All components consisting of de-carburized surfaces need to be removed to make certain ideal outcomes.
4.Programs
AISI 4140 is utilised thoroughly in most market sectors for a wide variety of programs these kinds of as:
Strippers bolts axle shafts
resource bodies bolsters holder blocks
stubs crankshafts tool holders
equipment parts and parts mould bases couplings
connecting rods tie rods conveyor parts
ejectors reamer bodies chuck bodies
uninteresting bars crow bars back again up and help tooling
axles collets guides
logging areas fixtures piston rods
conveyor pins & rolls tracks shafts
jigs rams ejector pins
techniques sprockets molds
hydraulic equipment shafts forks slides
studs cams gears
guide rods use strips or components pump shafts
drill collars sprockets torsion bars
forming dies ring gears equipment racks
chain hyperlinks lathe spindles brake dies
adapters valves spindles
logging areas trim dies arbors
milling spindles motor shafts pinch bars
pins pinions nuts
pump shafts resource holders sockets
five.Shipping and delivery problem and measurements:
sixteen-310mm:Scorching rolled / Scorching rolled+QT
five-100mm:Cold Drawn / Cold Drawn+QT
twenty-150mm:Peeled / Peeled+QT
200-1000mm:Cast
6.Payment conditions: T/T or L/ C
(1)thirty% compensated by T/T and rest 70% by T/T on the duplicate of B/B.
(two)a hundred% irrevocable L/C at sight
seven.Delivery time:inside of 7 -20 days soon after your deposit or L/C.
eight. Mark: which includes steel material, heat No., items, excess weight, date and so on.
