ASTM DIN EN Standard AISI 4340 40CrNi2Mo 1.6511 36CrNiMo4 Screw
ASTM DIN EN Standard AISI 4340 40CrNi2Mo 1.6511 36CrNiMo4 Screw
Products reference:
| Material | AISI 4340,40CrNi2Mo,1.6511,36CrNiMo4 |
| Forging equipment | 1500T hydraulic press |
|
Application |
Srew is mechanical parts |
| Melting process |
LF+EF+VD |
| Process technology |
Forging+heat treatment+rough machining+QT+CNC finish machining |
|
Forging ratio |
≥4 |
| Grain size | ASTM E112 6 or better |
| UT | SEP 1921-84 D/d |
| Hardness | 250-280HB |
| Surface finish degree | ≥3.2 |
| Applicable standard |
ASTM,ASME,DIN,JIS,ISO,BS,API,EN |
| Executive standard |
JB/GB/EN/DIN/JIS/ASME/ASTM/ISO |
| Certification authority |
ISO,BV,SGS, IST, UL,CTI |
|
Delivery term |
Rough machining(N+T);finish machining(Q+T) |
| Test device |
Spectrograph,ut device,tensile and impact test machine,metalloscope,hardness test machine |
| Service | Our service included the forging, process, heat treatment, finish machining, package, local logistics, customers clearance and maritime transport. We took the customer’s requirements as the principal thing, and pay attention on the products quality. |
Custom properties:
|
Chemical compostion |
C | Si | Mn | P | S | Cr | Ni | Mo | H |
| 36CrNiMo4 | 0.38-0.43 | 0.15-0.35 | 0.60-0.80 | ≤0.025 | ≤0.025 | 0.70-0.90 | 1.65-2.00 | 0.20-0.30 | ≤2.0ppm |
|
Mechanical property |
Dia.(mm) |
TS/Rm(Mpa) |
YS/Rp0.2(Mpa) |
EL/A5(%) |
RA/Z(%) |
Type Of notch |
Impact energy |
HBW |
| 36CrNiMo4 | Ø15 | ≥980 | ≥835 | ≥12 | ≥55 | V | ≥78 | ≤280HBS |
Nonmetallic inclusion ASTM E45(JK):
| Type | A | B | C | D |
| H≤ | 1.5 | 1.5 | 1.0 | 1.0 |
| T≤ | 2.0 | 2.0 | 1.5 | 1.5 |
Process procedure:
Forging process flow quality control: Raw material steel ingot into warehouse(test the chemical content) → Cutting→ Heating(Furnace temperture test) → Heat treatment after forging(Furnace temperture test) Discharge the furnace(blank inspection)→ Machining→ Inspection(UT,MT,Visal diamention, hardness)→ QT→ Inspection(UT, mechanical properties, hardness, grain size)→ Finish machining→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment
Commerce clause:
| Max weight | 10000KG |
| MOQ | 5PC |
| Delivery time | 20-40 days |
| Package | wooden case,wooden pallet,steel frame |
| Delivery term | FOB;CIF;CFR；DDU； |
| Payment term | T/T,LC |
|
Transportation |
Ocean,air |
Advantages:
- High-precision dimensional tolerance;
- Excellent mechanical properties;
- Produce different dimension based on customer’s requirements;
- Advanced manufacture equipments and inspection devices;
- Excellent technical personality;
- Control the production procedure strictly;
- Pay attention on the package protection;
- Quality full service.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.