Price Iron Low Carbon Mild Steel Square Bar 40X40 mm

• After-sales Service: 1year
• Warranty: 1year
• Technique: Hot Rolled
• Standard: ASTM,En,BS,GB
• Shape: Square
• Alloy or Not: Alloy
• Model NO.: Square Bar
• Thickness: 5-500mm etc
• Grade: Q195/235/345/3sp/5sp/Ss400 SAE 1005, 1006, 10
• Model No: 42CrMo 35CrMo etc
• Model Number: Square Steel Billets Rod Bar
• Length: 6-12m,etc
• Outer: 21.3 - 219 mm,etc
• Transport Package: Standard or Customized
• Specification: Standard Or Customized
• Trademark: DELONG
• Origin: Shandong
• HS Code: 7228500000
• Production Capacity: 7000 Tons/Month

Product Description

Carbon/alloy square steel bar is ideal for many industrial products and applications where strength and durability are required. Characteristics of carbon steel bars are based on the carbon content. Increased carbon content will raise carbon steel's hardness and strength. Inversely, lower carbon content results in a softer (mild) carbon steel that is easier to machine and weld.
 
The type of carbon steel needed is generally based on the application requirements. If you need assistance in determining the right carbon steel bar for your job our sales team is happy to help. Contact us on how we can help you with your next project. 

product name	square bar/billet
Width(mm)	5mm*5mm-500*500mm
Length(mm)	600-12000mm
Technology	hot rolled/cold rolled/cold drawn
Material	ASTM	A36, Grade 36, Grade 40 Grade 50, Grade 60,  Grade 80,etc
	DIN	Ck10,Ck15,Ck22,Ck25,Ck30,Ck35,Ck40,Ck45,Ck50, 30Mn4,40Mn4,etc
	BS	040A04,095M15,045M10,080A40,045M10,080M50,etc
	GB	Q195, Q215, Q235, Q255,  Q275, Q295, Q345, Q390, Q420, Q500, etc
Standard	GB/T799,ASTM A29,A108,A321,A575,BS970,DIN1652,JIS G4051
Surface	Black painting, varnish paint, anti rust oil, hot galvanized, cold galvanized, 3PE
Certificates	API5L ISO 9001:2008 TUV SGS CE BV etc
Packaging	Loose package, Packaged in bundles(3Ton Max) , bundled pipes with two slings at the both end for easy loading and discharging, End with Plastic caps or as per requirement
Application	1. Fluid pipe 2. Power Plant  3. Structure pipe 4. High and low pressure Boiler tube 5. Seamless pipe /tube for petroleum cracking  6. Conduit pipe  7. Scaffolding pipe pharmaceutical andship,building etc.
Tolerance	±1%
MOQ	1 ton
Supply Ability	5000 tons / month
Lead Time	7-15 working days after the receipt of 30% deposit
Payment Terms	30%T/T Advance + 70% Balance
Price Terms	FOB, CFR, CIF, EXW
Packing	Standard sea-worthy package or as required

Grade	Dia(mm)	Chemical Composition (%)
		C	Si	Mn	P	S	Ni	Cr	Cu	Ti	Mo
45	18-60	0.42-0.50	0.17-0.37	0.50-0.80	≤0.035	≤0.035	≤0.30	≤0.25	≤0.25
55		0.52-0.60	0.17-0.37	0.50-0.80	≤0.035	≤0.035	≤0.30	≤0.25	≤0.25
40Mn2		0.37-0.44	0.17-0.37	1.40-1.80	≤0.035	≤0.035		≤0.30
20CrMnTi		0.17-0.23	0.17-0.37	0.80-1.10	≤0.035	≤0.035		1.00-1.30		0.04-0.10
20CrMo		0.17-0.24	0.17-0.37	0.40-0.70	≤0.035	≤0.035		0.80-1.10			0.15-0.25
30CrMo		0.26-0.34	0.17-0.37	0.40-0.70	≤0.035	≤0.035		0.80-1.10			0.15-0.25
35CrMo		0.32-0.40	0.17-0.37	0.40-0.70	≤0.035	≤0.035		0.80-1.10			0.15-0.25
42CrMo		0.38-0.45	0.17-0.37	0.50-0.80	≤0.035	≤0.035		0.90-1.20			0.15-0.25
60Si2MnA		0.38-0.45	0.17-0.37	0.50-0.80	≤0.035	≤0.035		0.90-1.20

Grade	Mechanical property
	(Quenching, tempering, longitudinal)
	Tensile strength	Yield strength	Elongation	Elongation	Percentage reduction of area	Impact absorbing energy
	(σb/MPa)	(σs/MPa)	(δ5/%)	(δ10/%)	(ψ/%)	(AkU2/J)
45	≥600	≥335	≥16		≥40	39
55	≥645	≥380	≥13		≥35	-
40Mn2	≥885	≥735	≥12		≥45	55
20CrMnTi	≥1080	≥850		≥10	≥45	55
20CrMo	≥885	≥685	≥12		≥50	78
30CrMo	≥930	≥785	≥12		≥50	63
35CrMo	≥980	≥835	≥12		≥45	63
42CrMo	≥1080	≥930	≥12		≥45	63
60Si2MnA	≥1274	≥1176	≥5		≥25	-

Theoretical weight table of square steel bar
Side length(mm)	Sectional area(cm2)	Theoretical weight (kg/m)	Side length	Sectional area(cm2)	Theoretical weight (kg/m)
5mm	0.25	0.196	30mm	9	7.06
6mm	0.36	0.283	32mm	10.24	8.04
7mm	0.49	0.385	34mm	11.56	9.07
8mm	0.64	0.502	36mm	12.96	10.17
9mm	0.81	0.636	38mm	14.44	11.24
10mm	1	0.785	40mm	16	12.56
11mm	1.21	0.95	42mm	17.64	13.85
12mm	1.44	1.13	45mm	20.25	15.9
13mm	1.69	1.33	48mm	23.04	18.09
14mm	1.96	1.54	50mm	25	19.63
15mm	2.25	1.77	53mm	28.09	22.05
16mm	2.56	2.01	56mm	31.36	24.61
17mm	2.89	2.27	60mm	36	28.26
18mm	3.24	2.54	63mm	39.69	31.16
19mm	3.61	2.82	65mm	42.25	33.17
20mm	4	3.14	70mm	49	38.49
21mm	4.41	3.46	75mm	56.25	44.16
22mm	4.84	3.8	80mm	64	50.24
24mm	5.76	4.52	85mm	72.25	56.72
25mm	6.25	4.91	90mm	81	63.59
26mm	6.76	5.3	95mm	90.25	70.85
28mm	7.84	6.15	100mm	100	78.5