42CrMo4 Qt Hot Rolled Alloy Steel Round Bar

Product Details
Customization: Available
After-sales Service: One-Stop Service
Warranty: One Year
Manufacturer/Factory, Trading Company
Diamond Member Since 2018

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Registered Capital
5000000 RMB
Plant Area
>2000 square meters
  • 42CrMo4 Qt Hot Rolled Alloy Steel Round Bar
  • 42CrMo4 Qt Hot Rolled Alloy Steel Round Bar
  • 42CrMo4 Qt Hot Rolled Alloy Steel Round Bar
  • 42CrMo4 Qt Hot Rolled Alloy Steel Round Bar
  • 42CrMo4 Qt Hot Rolled Alloy Steel Round Bar
  • 42CrMo4 Qt Hot Rolled Alloy Steel Round Bar
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Basic Info.

Model NO.
42CrMo4
Standard
AISI, ASTM, GB, JIS, DIN
Technique
Hot Rolled
Application
Structural Steel Bar, Tool Steel Bar
Surface Treatment
Heat Treatment
Alloy
Alloy
Special Use
Mold Steel, Free Cutting Steel
Mtc
Original
Cutting Service
Available
Shape
Round Section
Length
1-12m
Processing Service
Welding, Cutting, Punching
Delivery Time
8-14 Days
Delivery Condition
Heat Treatment+Cold Drawn
Transport Package
Woven Cloth
Specification
OD10-812mm
Trademark
Orignal
Origin
Henan, China
HS Code
7214100000
Production Capacity
50000tons/Year

Product Description

42CrMo4 QT Hot Rolled Alloy Steel Round Bar 

Product Information Introduce
42CrMo4 Qt Hot Rolled Alloy Steel Round Bar
4140 alloy structural steel. This steel has good workability and small processing deformation. The fatigue resistance of 4140 alloy structural steel is quite good. It is a medium-sized hardenable steel. 4140 has good strength and good comprehensive mechanical properties after heat treatment. Good manufacturability and high yield. The highest operating temperature is 427 degrees Celsius. 4140 strength, high hardenability, good toughness, small deformation during quenching, high creep strength and enduring strength at high temperatures.
 
4140 steel is ultra-high-strength steel with high strength and toughness, good hardenability, no obvious temper brittleness, high
fatigue limit and multiple impact resistance after quenching and tempering, and good low-temperature impact toughness. 4140 steel
is suitable for manufacturing large and medium-sized plastic molds that require certain strength and toughness.
Mechanical properties
Hardness: Annealed, 147~241HB, 42CrMo

4140 mechanical properties:

Tensile strength σb (MPa): ≥1080(110)

Yield strength σs (MPa): ≥930(95)

Elongation δ5 (%): ≥12

Reduction of area ψ (%): ≥45

Impact energy Akv (J): ≥63

Impact toughness value αkv (J/cm2): ≥78(8)

Hardness: ≤217HB

In order to increase the mold life to more than 800,000 mold times, the hardening method of quenching and low temperature
tempering can be implemented on the pre-hardened steel. When quenching, preheat it at 500-600ºC for 2-4 hours, then keep it at
850-880ºC for a certain period of time (at least 2 hours), put it in oil and cool to 50-100ºC and air cooling, the hardness can
reach 50 after quenching -52HRC, in order to prevent cracking, 200ºC low temperature tempering treatment should be carried out
immediately. After tempering, the hardness can be maintained above 48HRC.


Corresponding grade
Russia ГOCT 38XM, the United States AISI 4140/4142, the United Kingdom BS 708M40/708A42/709M40, France NF 40CD4/42CD4, Germany DIN
41CrMo4/42CrMo4, Japan JIS SCM4, international ISO 683/1 3



Quenching specification
Common quenching and tempering specifications: quenching temperature 1000~1050ºC, quenching oil or quenching gas, hardness ≥ 60HRC;
tempering temperature 160~180ºC, tempering time 2h, or tempering temperature 325~375ºC, number of tempering 2 ~3 times.

Process specification
Hot working specification

The heating temperature is 1150 ~1200°C, the starting temperature is 1130 ~1180°C, and the ending temperature is> 850°C, when φ>
50mm, slow cooling.

Normalizing norms

The normalizing temperature is 850~900°C, and the furnace is air-cooled.

High temperature tempering specification

The tempering temperature is 680~700°C, and the furnace is air-cooled.

Quenching and tempering specifications

Preheating temperature is 680~700°C, quenching temperature is 840~880°C, oil cooling, tempering temperature is 580°C, water
cooling or oil cooling, hardness ≤217HBW.

Specification for sub-temperature quenching strengthening and toughening treatment

Quenching temperature 900°C, tempering temperature 560°C, hardness (37±1) HRC

Specification for induction hardening and tempering

The quenching temperature is 900°C, the tempering temperature is 150~180°C, and the hardness is 54~60HRC.

Product Description

Product name

 steel round bar

Size

O.D

8-480mm

Length

1-12m

Standard

AISI,ASTM,GB,DIN,BS,JIS

Grade

42CrMo4, 4140

Inspection

X-ray inspection, manual ultrasopic inspection,surface inspection,hydraulic testing

Technique

Hot Rolled

Section Shape

Round

Main Market

Southeast Asia, Middle East, Australia,USA,South America,Africa

Productivity

5000 Tons/month

Packing

Standard bundle package Beveled end or as per request

Surface Treatment

Black Painted, PE Coated, Galvanized or Customized all available

Date of Delivery

According to The Specifications And the Quantities Of Each Contract,

Time Start To Begin When We confirm the Date of the Earnest or L/C

Method of Payment

T/T    L/C   

Method Of Delivery

Terms According To the <INCOTERMS 2000> for International Trading

Remarks

1.Payment Terms T/T, L/C

2.Trade Term:FOB/CFR/CIF

3.Minimum Quantity of Order: 2 Tons

4.Delivery Time:7-15 days after receipt of deposit

Product Shows:
42CrMo4 Qt Hot Rolled Alloy Steel Round Bar42CrMo4 Qt Hot Rolled Alloy Steel Round Bar42CrMo4 Qt Hot Rolled Alloy Steel Round Bar42CrMo4 Qt Hot Rolled Alloy Steel Round Bar42CrMo4 Qt Hot Rolled Alloy Steel Round Bar
Produce Process
42CrMo4 Qt Hot Rolled Alloy Steel Round Bar
Packing&Delivery

MOQ: 25 Ton
Terms of delivery: FOB, CFR, CIF.
Terms of payment: L/C, T/T.
Port of Loading: Tianjin/ Shanghai,China
Quantity of stock: Normally have large quantity stocks.
Time of delivery: 10-25 days for batch goods.Normally delivery in 20 days from production
Package Informations: Seaworthy Packing or as required
42CrMo4 Qt Hot Rolled Alloy Steel Round Bar42CrMo4 Qt Hot Rolled Alloy Steel Round BarApplication
42CrMo4 Qt Hot Rolled Alloy Steel Round BarWhy Choose Us?
Our advantages:
1. More than 10 years Professional steel export service. Have own production line.
2. Advanced CNC machine.
3. Low cost&Quick Delivery&High quality.
4. Integrity, strength and quality of products recognized by the industry.
5. Most of our clients are international, the domestic well-known enterprises.
6. Has a complete scientific quality management system. 
7. Can meet any requirements for all kinds of sheet metal processing with advanced equipment.
42CrMo4 Qt Hot Rolled Alloy Steel Round Bar

FAQ
Q1: How can I get a sample to check your metal work quality?
Answer: After price confirmation, you can require for samples to check our quality. We will provide you sample for free (value under USD35), as long as you afford the express freight.

Q2: How long can I expect to get the metal work sample?
Answer: After you pay the sample charges(if there is) and send us confirmed drawings, the sample will be ready for delivery in 5-7 working days. The samples will be sent to you via DHL, FedEx,UPS,TNT or EMS. It should arrive in 3-5 workdays. You can use your own express account or prepay us if you don't have any account.

Q3: What about the leading time for metal work mass production?
Answer: Honestly, it depends on the order quantity. Normally, 15 workdays to 30 workdays after your deposit if no the samples are confirmed.

Q4: What will we do if the metal work quality is not ok ?
Answer: If the quality problem is caused by our mistake, we will make replacement order for free or pay the back product charge and handling charge back to you.


More questions, please send us the email to us

42CrMo4 Qt Hot Rolled Alloy Steel Round Bar

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