
41Cr4 / 5140/40Cr round bar steel hot forged , forged steel bar, Small MOQ
1.Application:
Used to manufacture medium speed and medium load parts after
quenched and tempered, such as gear, shaft, worm, spline shaft,
centre sleeve, etc.
Used to manufacture high hardness surface and wear resistance parts
after high frequency case hardening and tempered, such as gear,
main shaft, bent axle, mandrel, sleeve, pin, connecting rod, screw,
nut, etc.
Used to manufacture high load and medium speed impact parts after
quendced and medium temperature tempered, such as pump rotor,
slider block, main shaft, lantern ring, etc.
Used to manufacture high load, low speed impact and wear resistance
parts after quenched and low temperature tempered, such as shaft,
main shaft, worm, lantern ring, etc.
Used to manufacture big size and high low-temperature impact
toughness driving parts after carbonitriding, such as shaft, gear,
etc.
Material: | 41Cr4 / 5140/40Cr round bar steel hot forged , forged steel bar, Small MOQ |
Diameter: | 80mm-1200mm |
Length: | 1000mm-12000mm Straightness: 3mm/M max |
Process: | EAF + LF + VD + Forged + Heat Treatment (optional) |
Delivery condition: | Hot forged +Rough machined (black surface after Q/T)+ Turned (optional) |
Delivery Time: | 10-45 days |
MOQ: | 2-3 tons |
Heat treatment: | Normalized / Annealed / Quenched / tempered |
Technical Data: | According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing |
Test: | Ultrasonic test according to SEP 1921-84 G3 C/c |
Marking: | Grade, heat NO. length will be stamped one each bar with required color |
Payment: | 30% advance by TT; Balance pay before the shipment against shipping documents or irrevocable LC at sight |
Application: | Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears. |
2, Chemical Composition
C | Si | Mn | P | S | Cr |
0.38 - 0.45 | max 0.4 | 0.6 - 0.9 | max 0.035 | max 0.035 | 0.9 - 1.2 |
3,Properties:
Nominal diameter (mm): | to 16 | 16 - 40 | 40 - 100 |
Rm - Tensile strength (MPa) (+QT) | 1000-1200 | 900-1100 | 800-950 |
Nominal thickness (mm): | to 8 | 8 - 20 | 20 - 50 |
Rm - Tensile strength (MPa) (+QT) | 1000 | 900 | 800 |
Nominal diameter(mm): or for flat products thickness: to 8; 8-20; 20-60; | to 16 | 16 - 40 | 40 - 100 |
Re - Upper yield strength or Rp0.2 - 0.2% proof strength (MPa) (+QT) | 800 | 660 | 560 |
Temperature ° C | +20 |
KV - Impact energy (J) (+QT) | 30-35 |
Temperature ° C | +20 |
KV - Impact energy (J) transverse, (+QT) | 22 |
Nominal thickness (mm): | to 16 | 16 - 40 | 40 - 100 |
A - Min. elongation Lo = 5,65 √ So (%) (+QT), round products | 11 | 12 | 14 |
Nominal diameter (mm): or for flat products thickness: to 8; 8-20; 20-60; | to 16 | 16 - 40 | 40 - 100 |
Z - Reduction in cross section on fracture (%) (+QT) | 30 | 35 | 40 |
Brinell hardness (HBW): (+S) | 255 |
Brinell hardness (HBW): (+A) | 241 |
SHANGHAI UNITE STEEL
We, Shanghai Unite Steel are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.
In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china, such as: DAYE Special Steel-a famous steel enterprise with the longest steelmaking history; BAO Steel, and Dongbei Special Steel Group-the biggest special steel manufacturer; TPCO, VALIN-largest seamless steel tube production enterprise; What's more, we have built long, deep and close business relationship with dozens of steel companies, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!