Cold Rolled DIN 34CrNiMo6 JIS Sncm447 ASTM 4340 1.6582 by Chinese Manufacturer Metal Iron-Carbon Round Bar

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Hot Rolled
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Surface Treatment: Black/Peeling/Polishing/Machining/Grinding/Turning
• Alloy: Alloy
• Model NO.: 34CrNiMo6 JIS SNCM447 ASTM 4340 1.6582
• Special Use: Mold Steel
• Transport Package: Standard Packaging or Customized
• Specification: 100-12000mm
• Trademark: meide
• Origin: Shandong, China
• HS Code: 72141000
• Production Capacity: 1000 Ton/Month

Product Description

Introduction

Low alloy high strength steel is a kind of engineering structural steel developed by adding a small amount of Mn, Si, Nb, V, Ti, Al and other alloy elements on the basis of carbon structural steel. The so-called low alloy means that the total amount of alloy elements in steel does not exceed 3%. High strength is relative to carbon engineering structural steel. The development principle of low alloy high strength steel is to use as few alloying elements as possible to obtain as high comprehensive mechanical properties as possible, so as to meet the purpose of use and low cost. Low alloy high-strength steel can meet the requirements of large bearing capacity of various structures (such as large bridges, pressure vessels, ships, etc.) in engineering, and at the same time, it is required to reduce the dead weight of structures, improve reliability, and save materials and resources. This kind of steel is mainly used to manufacture various engineering structures with high strength requirements, such as bridges, ships, vehicles, high pressure vessels, oil and gas pipelines, large steel structures, etc. Because this kind of steel can obtain high strength without complex treatment process or even heat treatment, which greatly reduces the quality of engineering structures, it is used to replace general carbon structural steel.

chemical composition

component	C	Si	Mn	P	S	Cr	Ni	Mo
minimum value	0.3	0.17	0.4	-	-	1.4	1.4	0.15
Maximum  value	0.38	0.37	0.7	0.035	0.035	1.7	1.7	0.3

Approximate comparison table

GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Digital grade	GOST	SS
34CrNi3Mo  34CrNiMo  ZG34CrNiMo	SNCM447	4340	36CrNiMo6	34CrNiMo6  GS-34CrNiMo6V	35NCD6	34CrNiMo6	1.6582	36KH2N2MFA  38KH2N2MA  40KHN2MA	2541

 

 

Mechanical properties

diameter  d  mm	Heat treatment or condition	tensile strength σb Mpa	Yield point σs Mpa	Elongation δ %	Reduction of area ψ  %	Hardness HBW
d≤100	Quenching and tempering, minimum tempering temperature 593ºC	≥860	≥725	≥16	≥50	≤321

Product Parameters

Carbon steel

A283GR.C/GR.D, ASTMA36, A573GR.58, A573GR.65, A573GR.70. SS400, SM400A, SM400B. SM400C, S235JR, S235J0, S235J2, S275JR, S275J0, S275J2, S275N, S275NL, S275M, S275ML, 250, 250L0, 250L15, Q235A/B/C/D, Q275A/B/C/D,

Low Alloy steel

A572GR.50, A572GR.60, SS490, SM490N/NL, S460N/NL, S355M/ML, S420M/ML, S460M/ML, S500Q/QL/QL1, S550Q/QL/QL1,S620Q/QL/QL1, S690Q/QL/QL1, S355G8+N, 350, 350L0, 350L15, Q345A, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C, Q390D, Q390E, Q420A, Q420B, Q420C, Q420D, Q420E, Q460C, Q460D, Q460E, Q500C, Q500D, Q500E, Q550C, Q550D, Q550E, Q20C, Q620D, Q620E, Q690C, Q690D, Q690E, 890D, Q890E,Q960D, Q960E, XGCFQ500D, XGCFQ500E.

Application

20Mn2	The properties of 20Mn2 and 20Cr with medium strength and small section size are similar, and the low-temperature impact toughness and welding properties are better than those of 20Ct. During cold deformation, the plasticity is high, the machinability is good, the hardenability is higher than the corresponding carbon steel, and the heat treatment has the tendency of overheating, decarburization sensitivity and temper brittleness
30Mn2	30Mn2 is usually used after quenching and tempering treatment. It has high strength, good toughness, and excellent wear resistance. When making parts with small section size, it has good static strength and fatigue strength, good wire drawing, cold heading, and heat treatment processability, medium machinability, and weldability. Generally, it does not need to be welded. When welding is needed, the parts should be preheated to more than 200 ° C, with high hardenability, and small quenching deformation, But it is sensitive to overheating, decarburization and temper brittleness
35Mn2	The carbon content is higher than that of 30Mn2, so it has higher strength and better wear resistance. The hardenability is also improved, but the plasticity is slightly reduced. The plasticity during cold deformation is medium, the machinability is medium, the weldability is low, and there are white spot sensitivity, overheating tendency and temper brittleness tendency. Water cooling is easy to produce cracks, and it is generally used in the quenched and tempered or normalized state
40Mn2	Medium carbon quenched and tempered manganese steel is superior to 40 steel in strength, plasticity and wear resistance, and has good heat treatment processability and machinability. It has poor weldability. When the carbon content is below *, it needs to be preheated to 100-425 ºC before welding. It has temper brittleness, overheating sensitivity, and water cooling is easy to produce cracks. It is usually used in the quenched and tempered state
45Mn2	Medium carbon quenched and tempered steel, with high strength, wear resistance and hardenability, can obtain good comprehensive mechanical properties after quenching and tempering, and is suitable for oil cooling and high temperature tempering. It is often used in the quenched and tempered state, and can also be used in the normalized state when necessary. The machinability is fair, but the weldability is poor, the plasticity is low when cold deformation occurs, the heat treatment has the tendency of over heat sensitivity and temper brittleness, and cracks are easily produced when water cooling
50Mn2	Medium carbon quenched and tempered high-strength manganese steel has high strength, high elasticity, excellent wear resistance, high hardenability, good machinability, low cold deformation plasticity, poor welding performance, overheating sensitivity, white spot sensitivity and temper brittleness, and cracks are easy to occur in water cooling. Proper quenching and tempering treatment can obtain good comprehensive mechanical properties, which can be used after quenching and tempering, normalizing and tempering

FAQ

1. Who are we?
Our headquarter is located in Shandong, China. Since 2022, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.

2. How do we guarantee quality?
Always provide pre-production samples before mass production;
Always carry out final inspection before shipment;

3. What can you buy from us?
Copper, aluminum, die steel, titanium, customized machine parts
4. Why should you buy from us instead of other suppliers?
The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.

5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW
Accepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;
Accepted payment type: T/T, L/C, D/P D/A, PayPal;
Optional ports: Tianjin, Shanghai, Guangzhou;
Spoken: English, Chinese

6. How can we get your price?
A. We need the following information to quote for you:
1).  Product Name
2).  standard
3).  Material grade (chemical composition)
4).  dimension
5).  amount
6).  Special part drawing