Supply 6mm ASTM 1345 GB 45mn2 JIS Smn443 DIN 46mn7 1.0912 Black 10mm Carbon Steel 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.: ASTM 1345 GB 45Mn2 JIS SMn443 DIN 46Mn7 1.0912
• 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

Product Description

Medium carbon quenched and tempered manganese steel has high strength, wear resistance and hardenability. After quenching and tempering, it can obtain good comprehensive mechanical properties and is suitable for oil cooling and high temperature tempering. It is usually used in the quenched and tempered state, and can also be used in the normalized state if necessary. The machinability is acceptable, but the weldability is poor, the cold deformation plasticity is low, the heat treatment has the tendency of temper brittleness and overheating sensitivity, and water cooling is easy to produce cracks. Parts used for manufacturing under high stress and wear conditions are equivalent to 40Cr when used as parts with diameter ≤ 60mm; In automobile, tractor and general machinery manufacturing, it is used for universal joint shaft, axle, connecting rod cap, friction disc, worm, gear, gear shaft, tram and steam locomotive axle, heavy load frame and cold-drawn bolt and nut

chemical composition

Material	component	C	Si	Mn	P	S	Cr	Ni	Cu
ASTM 1320 GB 20Mn2	minimum value	0.17	0.17	1.4	-	-	-	-	-
	maximum value	0.24	0.37	1.8	0.035	0.035	0.3	0.3	0.3
ASTM 1330 GB 30Mn2	minimum value	0.27	0.17	1.4	-	-	-	-	-
	maximum value	0.34	0.37	1.8	0.035	0.035	0.3	0.3	0.3
ASTM 1335 GB 35Mn2	minimum value	0.32	0.17	1.4	-	-	-	-	-
	maximum value	0.39	0.37	1.8	0.035	0.035	0.3	0.3	0.3
ASTM 1340 GB 40Mn2	minimum value	0.37	0.17	1.4	-	-	-	-	-
	maximum value	0.44	0.37	1.8	0.035	0.035	0.3	0.3	0.3
ASTM 1345 GB 45Mn2	minimum value	0.42	0.17	1.4	-	-	-	-	-
	maximum value	0.49	0.37	1.8	0.035	0.035	0.3	0.3	0.3
GB 50Mn2 DIN 50Mn7	minimum value	0.47	0.17	1.4	-	-	-	-	-
	maximum value	0.55	0.37	1.8	0.035	0.035	0.3	0.3	0.3

Product Parameters

Material Science:	Hot rolled/cold drawn/forged steel round steel
Process:	It is forged from vacuum degassed steel ingot.
Diameter:	25mm - 1000mm (optional)
Length:	1000mm-12000mm Straightness:3mm/M max(optional)
Process:	EAF+LF+VD+forging+heat treatment (optional)
Delivery conditions:	Hot forging+rough machining (black surface after Q/T)+double tempering.
Delivery time	15-25 days
Minimum order quantity:	5 tons
Heat treatment:	Normalizing/annealing/quenching/tempering (optional)
Technical data:	Chemical composition, physical properties and mechanical tests according to customer requirements
characteristic:	According to your requirements
Test:	Ultrasonic test according to SEP 1921-84 C/c and D/d (optional)
Tag:	Grade, heat resistant NO The length will be printed with the required color on each bar
Payment:	T T 30% in advance; The balance shall be paid against shipping documents or irrevocable letter of credit at sight before shipment
Terms of trade	FOB,C&F,EXW...

Mechanical properties

Material	Diameter (thickness) d mm	tensile strength σ b  Mpa	Yield point σ s  Mpa	Elongation or elongation after fracture δ  %	Hardness HBW	Impact absorbed energy KV2 J
ASTM 1320 GB 20Mn2	d=15	≥785	≥590	≥10	≤187	≥47
ASTM 1330 GB 30Mn2	d=25	≥785	≥635	≥12	≤207	≥63
ASTM 1335 GB 35Mn2	d=25	≥835	≥685	≥12	≤207	≥55
ASTM 1340 GB 40Mn2	d=25	≥885	≥735	≥12	≤217	≥55
ASTM 1345 GB 45Mn2	d=25	≥885	≥735	≥10	≤217	≥47
GB 50Mn2 DIN 50Mn7	d=25	≥930	≥785	≥9	≤229	≥39

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