High Quality Forged Round Bar En 39NiCrMo3 1.6510 40crnimo /4140/4130/5120/5140 Forged Round Bars/Rod

• 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.: 39NiCrMo3 1.6510 40CrNiMo /4140/4130/5120/5140
• Special Use: Mold Steel, Free Cutting Steel, Cold Heading Steel, Tool 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

It has high strength, high toughness, good hardenability, stability against overheating, high white spot sensitivity, and temper brittleness. The weldability of steel is poor, so it needs to be preheated at high temperature before welding and stress relief treatment after welding. It is generally used in the quenched and tempered state, and can also be used as ultra-high strength steel after low temperature tempering or isotherm
 

chemical composition

Grade	C	Si	Mn	Cr	Ni	Mo	P	S	Cu
							≤
20Mn2	0.17-0.24	0.17-0.37	1.40-1.80	≤0.30	≤0.30	≤0.10	0.030	0.030	0.30
SMn420	0.17-0.23	0.15-0.35	1.20-1.50	≤0.35	≤0.25		0.030	0.030	0.30
1524	0.19-0.25	0.15-0.30	1.35-1.65	-	-		0.040	0.050	0.20
22Mn6	0.18-0.25	0.10-0.40	1.30-1.65	≤0.40	≤0.40	≤0.10	0.025	0.035	0.30
18Mn5 1.0436	0.15-0.20	≤0.40	0.90-1.60	≤0.30	≤0.30	≤0.08	0.025	0.015	0.30
35Mn2	0.23-0.39	0.17-0.37	1.40-1.80	≤0.30	≤0.30	≤0.10	0.030	0.030	0.30
SMn438	0.35-0.41	0.15-0.35	1.35-0.65	≤0.35	≤0.25	-	0.030	0.030	0.30
1335	0.33-0.38	0.15-0.35	1.60-1.90	≤0.20	≤0.25	≤0.06	0.035	0.040	0.35
36Mn6	0.33-0.40	0.10-0.40	1.30-1.65	≤0.40	≤0.40	≤0.10	0.025	0.035	0.30
40Mn2	0.37-0.44	0.17-0.37	1.40-1.80	≤0.30	≤0.30	≤0.10	0.030	0.030	0.30
SMn443	0.40-0.46	0.15-0.35	1.35-1.65	≤0.35	≤0.25	-	0.030	0.030	0.30
1340	0.38-0.43	0.15-0.35	1.60-1.90	≤0.20	≤0.25	≤0.06	0.035	0.040	0.35
55SiMnMo/60Si2Mn/SUP6/ 1.0909/60Si7	0.52-0.6	0.9-0.9	1-1.3	≤0.35	-	-	0.04	0.04	0.2
SUP10 1.8159 50CrV4 50CrVA	0.47-0.55	0.15-0.35	0.65-0.95	0.8-1.1	-	-	0.03	0.03	0.3
39NiCrMo3/ 1.6510 /40CrNiMo	0.35-0.43	≤0.4	0.5-0.8	0.6-1	0.7-1	0.15-0.25	0.025	0.035	-

 

Product Description

 

Steel					STB42
	20CrMo	20XM	4119,4118	CDS12	SCT42	18CD4	20CrMo44
				CDS110	STT42
					STB42
	25CrMo		4125	En20A		25CD4	25CrMo4
	30CrMo	30XM	4130	1717COS110	SCM420	30CD4
	42CrMo		4140	708A42		42CD4	42CrMo4
				708M40
	35CrMo	35XM	4135	708A37	SCM3	35CD4	34CrMo4
	12CrMoV	12XMΦ
	12Cr1MoV	12X1MΦ					13CrMoV42
	25Cr2Mo1VA	25X2M1ΦA
	20CrV	20XΦ	6120				22CrV4
	40CrV	40XΦA	6140				42CrV6
	50CrVA	50XΦA	6150	735A30	SUP10	50CV4	50CrV4
	15CrMn	15XГ,18XГ
	20CrMn	20XГCA	5152	527A60	SUP9
	30CrMnSiA	30XГCA
	40CrNi	40XH	3140H	640M40	SNC236		40NiCr6
	20CrNi3A	20XH3A	3316			20NC11	20NiCr14
	30CrNi3A	30XH3A	3325	653M31	SNC631H		28NiCr10
			3330		SNC631
	20MnMoB		80B20
	38CrMoAlA	38XMIOA		905M39	SACM645	40CAD6.12	41CrAlMo07
	40CrNiMoA	40XHMA	4340	871M40	SNCM439		40NiCrMo22

mechanical behavior

Modulus of elasticity E /GPa		Thermal conductivity λ/ W·(m·K)-1
20ºC		20ºC	100ºC	300ºC	400ºC
204		-	46.06	41.87	37.68

 

Linear expansion coefficient α/ 10-6 ·K-1					Specific heat capacity c/J·(g·K)-1
20~100ºC	20~200ºC	20~400ºC	20~600ºC	≈700ºC	20ºC
-	11.4	14	14.7	15	0.149

Features and applications

 

	Main features	Application
20CrNiMo	20CrNiMo steel is originally the steel grade 8720 in American AISI and SAE standards. The hardenability is similar to that of 20CrNi steel. Although the content of Ni in steel is half of that of 20CrNi steel, the upper part of the isothermal transformation curve of austenite moves to the right due to the addition of a small amount of Mo; also Due to the proper increase of Mn content, the hardenability of this steel is still very good, and its strength is also higher than that of 20CrNi steel	It is often used to manufacture gears in engines and transmission systems of small and medium-sized cars and tractors; It can also replace the manufacturing requirements of 12CrNi3 steel Carburized parts and cyanided parts with high core performance, such as the jaw and cone body of the cone bit used in petroleum drilling and metallurgical open-pit mines
40CrNiMoA	It has high strength, high toughness and good hardenability. When it is hardened to semi-martensitic hardness (HRC45), the critical hardenability diameter of water quenching is ¢ ≥ 100mm, and the critical hardenability diameter of oil quenching is ¢ ≥ 75mm; When hardening to 90% martensite, the critical diameter of water quenching is ≯ 80-90mm, and the critical diameter of oil quenching is ¢ 55-66mm. This steel has stability against overheating, but it has high self-point sensitivity, temper brittleness, and poor weldability. It needs to be preheated at high temperature before welding, and stress relief treatment after welding	It is used after quenching and tempering to make important parts requiring good plasticity, high strength and large size, such as shafts with high load in heavy machinery Class II, turbine shaft, blade, high-load transmission parts, fasteners, crankshaft, gear, etc. with diameter greater than 250mm; It can also be used for rotor shafts and blades with operating temperature over 400 ° C. In addition, this steel can also be used to make special properties after nitriding Important parts required

 

Packaging	1. by bundles, each bundle weight under 3 tons, for small outer diameter steel bars, each bundle with 4 - 8 steel strips.  2. after making by bundle, covered with Polyethylene waterproof cloth. 3. make black paints painting on each bar, then make bundles
20 feet container contains dimension	Length under 6000mm
40 feet container contains dimension	Length under 12000mm
By bulk vessel	Freight charge is low by bulk cargo, and large heavy sizes can not be loaded into containers can shipping by bulk cargo

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