AISI 4140 Alloy Steel   4140 Qt Steel Round Bar

AISI 4140 Alloy Steel / 4140 QT Metal Spherical Bar 
 

one.Equal CZPTs 

GB,YB JIS DIN(W-Nr.) ASTM BS NF
42CrMo SCM440/(SCM4) 42CrMo4-1.7225 4140 708M40/709M40/708A42/EN19 42CD4

two.Chemical composition of 4140 steel

CHEMICAL ANALYSIS
C% Carbon 0.38 – 0.43
Mn% Manganese 0.75 – 1.00 max
P% Phosphorus 0.035 max
S% Sulfur 0.040 max
Si% Silicon 0.20 – 0.35
Cr% Chromium 0.80 – 1.ten
Mo% Molybdenum 0.15 – 0.twenty five

3.Warmth remedy of 4140 scm440 en19 
Forging

Can be heated to 1150°C and preserved until uniform
Bare minimum forging temperature 850°C
Can be cooled slowly and gradually in sand or ash
Pressure Relieving
Hardened: Warmth to 500°C – 550°C
Annealed: Warmth to 600°C – 650°C
Great in nevertheless air
Annealing
Heat to 830°C – 850°C
Furnace awesome
Normalizing
Heat to 870°C – 900°C
Cool in even now air
Nitriding
Warmth to 500°C – 530°C and keep for adequate time to create the depth of circumstance needed
Parts need to be pre-hardened and tempered as necessary and also pre-machined leaving a tiny grinding allowance only.
Tempering
Heat to 450°C – 700°C great in nonetheless air
Tempering in the selection of 200°C – 420°C brings about mood brittleness and ought to be prevented
Flame and Induction Hardening
All resources consisting of de-carburized surfaces must be taken off to ensure ideal results.

four.Applications
AISI 4140 is utilized extensively in most industry sectors for a extensive selection of applications this sort of as:

Strippers bolts axle shafts
device bodies bolsters holder blocks
stubs crankshafts tool holders
equipment elements and parts mould bases couplings
connecting rods tie rods conveyor parts
ejectors reamer bodies chuck bodies
unexciting bars crow bars back up and support tooling
axles collets guides
logging parts fixtures piston rods
conveyor pins & rolls tracks shafts
jigs rams ejector pins
approaches sprockets molds
hydraulic machinery shafts forks slides
studs cams gears
guidebook rods dress in strips or areas pump shafts
drill collars sprockets torsion bars
forming dies ring gears gear racks
chain backlinks lathe spindles brake dies
adapters valves spindles
logging components trim dies arbors
milling spindles motor shafts pinch bars
pins pinions nuts
pump shafts resource holders sockets

five.Shipping situation and sizes:
sixteen-310mm:Scorching rolled / Scorching rolled+QT
five-100mm:Chilly Drawn / Chilly Drawn+QT
twenty-150mm:Peeled / Peeled+QT
200-1000mm:Cast

six.Payment conditions: T/T or L/ C

(1)30% compensated by T/T and relaxation 70% by T/T on the copy of B/B.

(two)a hundred% irrevocable L/C at sight

seven.Shipping and delivery time:within seven -20 times after your deposit or L/C.

8. Mark: such as metal substance, heat No., items, fat, day and so on.

AISI 4140 Alloy Steel / 4140 QT Steel Spherical Bar 
AISI 4140 Alloy Metal / 4140 QT Metal Spherical Bar 
AISI 4140 Alloy Steel / 4140 QT Steel Round Bar 

AISI 4140 Alloy Steel   4140 Qt Steel Round Bar