Round Bar Hot-Rolled Carbon Steel ASTM 1330 GB 30mn2 JIS Smn433 DIN 30mn5 1.1165 Round Bar/Rod

• Type: Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Carbon Steel
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Blace/Polishing/Oiling or Galvanizing/ etc
• Model NO.: ASTM 1330 GB 30Mn2 JIS SMn433 DIN 30Mn5 1.1165
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Wear-Resistant Steel, Cold Heading Steel, Free-Cut
• Transport Package: Standard Seaworthy Export Packaging or as Required
• Specification: 3000-9000mm
• Trademark: meide
• Origin: Shandong, China
• HS Code: 84802000
• Production Capacity: 1000 Ton/Month

Product Description

About products

During cold deformation, the plasticity is medium, and the machinability and weldability are acceptable, but the parts shall be preheated to more than 200 ºC before welding. The properties of wire drawing, cold heading and heat treatment processes are good, and the hardenability is high. The critical quenching diameter in oil is 6.5~18mm, and the quenching deformation is small, but there are overheating, decarburization sensitivity and temper brittleness. After quenching and tempering, the steel has high strength, toughness and wear resistance, as well as good static strength and fatigue strength. After quenching and tempering, it is used for small section fasteners, gearbox gears, shafts, cold heading bolts, and carburized parts with high requirements for central strength.

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
30Mn2	0.27-034	0.17-0.37	1.40-1.80	≤0.30	≤0.30	≤0.10	≤0.030	≤0.030	≤0.30
SMn433	0.30-0.36	0.15-0.35	1.20-1.50	≤0.35	≤0.25	-	≤0.030	≤0.030	≤0.30
1330	0.28-0.33	0.15-0.35	1.60-1.90	≤0.20	≤0.25	≤0.60	≤0.035	≤0.040	≤0.35
28Mn6	0.25-0.32	0.10-0.40	1.30-1.65	≤0.40	≤0.40	≤0.10	≤0.025	≤0.035	≤0.30
1.1170	0.25-0.32	≤0.40	1.30-1.65	≤0.40	≤0.40	≤0.10	≤0.030	≤0.035	≤0.30

Product Description

ALLOY STRUCTURE STEEL
Grade	AISI /ASTM	DIN (W.Nr)	JIS	EN/ BS	GB
5120	5120	1.7027 /21Cr4	SCr420		20Cr
530M40 /5140	530M40 /5140	1.7035 /41Cr4	SCr440		40Cr
5145	5145		Scr445		45CR4
4118	4118	1.7243 /18CrMo4	SCM418 / SCM420		20CrMo
4135	4130	1.7218 /25CrMo4	SCM430	708A25/ 708M25	30CrMo
4140	4140	1.7225 /42CrMo4	SCM440	EN19/ 709M40	42CrMo
4340	4340	1.6582/ 34CrNiMo6	SNCM 439/ SNCM8	EN24/ 817M40	40CrNi2Mo
8620	8620	1.6523/ 21NiCrMo2	SNCM220	805M20	20CrNiMo
CARBON STEEL
20	1020	C22. CK22	S20C	EN3B /070M20	20
35	1035	C35.CK35	S35C		35
45	1045	C45.CK45	S45C	EN8D/C45E	45
50	1050	CK53	S50C	EN9/070M55	50
Q355		S355J /ST52		EN14	Q355
30Mn	1030.1033		S30C		30Mn

Mechanical properties

 

Sample diameter d mm	Heat treatment or condition	tensile strength σb Mpa	Yield point σs Mpa	Elongation δ %	hardness HBW	Impact absorbed energy KV2 J	Reduction of area ψ %
d=15	Quenching+tempering	≥785	≥635	≥12	≤207	≥63	≥45

Application

30Mn2

30Mn2 is usually used after quenching and tempering treatment. It has high strength, good toughness, and excellent wear resistance. When manufacturing parts with small section size, it has good static strength and fatigue strength, good wire drawing, cold heading, and heat treatment process, medium machinability, and acceptable weldability. Generally, it does not make weldments. When welding is required, the parts should be preheated to above 200 ° C, with high hardenability, and small quenching deformation, However, it has overheating, decarburization sensitivity 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 decreased. During cold deformation, the plasticity is medium, the machinability is medium, the weldability is low, and there is white spot sensitivity, overheating tendency and temper brittleness tendency. Water cooling is easy to produce cracks, and it is generally used in quenched and tempered or normalized conditions

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 drawin