• Model NO.：Steel Square Bar
• Delivery Condition：Hot Rolled Steel Square Bar
• Sizesof Steel Square Bar：10X10 to 120X120mm
• Gradeof Steel Square Bar：40cr 5140
• Length of Steel Square Bar：6m Fixed or as Required
• MOQ of Steel Square Bar：3tons Per Size
• Transport Package：Standard Sea Worthy
• Specification：15x15-150X150mm
• Origin：China
• Production Capacity：3000tons,Month

Basic Info.

Model NO. Steel Square Bar Delivery Condition Hot Rolled Steel Square Bar Sizesof Steel Square Bar 10X10 to 120X120mm Gradeof Steel Square Bar 40cr 5140 Length of Steel Square Bar 6m Fixed or as Required MOQ of Steel Square Bar 3tons Per Size Transport Package Standard Sea Worthy Specification 15x15-150X150mm Origin China Production Capacity 3000tons/Month

Product Description

ASTM 5140/40Cr/41Cr4 Alloy structure Steel round bar, 5140 steel square/flat bar
Standard steel GB in China is 40Cr, the German DIN standard material No. 1.17035/1.7045, German standard DIN grade 41Cr4/42Gr4, EN grade 18 British standard, the British standard BS steel 41Cr4, France AFNOR 42C4 France NF steel standard, standard grade of steel 38Cr4/41Cr4, Italy UNI 41Cr4 Belgium NBN steel standard, standard grade of steel 42Cr4, Sweden SS standard grade 2245. The American AISI/SAE/ASTM standard grade 5140, the Japanese JIS standard grade SCr440 (H) /SCr440, the international organization for standardization ISO standard steel 41Cr4.
1.Products :ASTM 5140/40Cr/41Cr4  Hot Rolled Steel Square Bar
Grades: ASTM 5140/40Cr/41Cr4
Delivery condition :Hot rolled, surface black.
Packing : by bundles.

2. SAE 5140 40Cr 41Cr4Steel equivalent grade and chemical composition

Standard	Grade	C	Cr	Mn	Si	P	S
GB/T3077	40Cr	0.37-0.44	0.8-1.1	0.5-0.8	0.17-0.37	0.035	0.035
TOCT 4543	40X	0.36-0.44	0.8-1.1	0.5-0.8	0.17-0.37	0.035	0.035
JIS G4053	SCr440	0.38-0.43	0.9-1.2	0.6-0.9	0.15-0.35	0.03	0.03
ASTN A29/A29M	5140	0.38-0.43	0.7-0.9	0.6-0.9	0.15-0.35	0.03	0.03
ISO 693	41Cr4	0.38-0.45	0.91.2	0.6-0.9	0.1-0.4	0.035	0.035
EN 10083	41Cr4	0.38-0.45	0.91.2	0.6-0.9	0.1-0.4	0.025	0.035

3.Mechanical properties:

Sample blank size (mm):25
The first quenching heating temperature (ºC):850; coolant: Oil
Second quenching heating temperature (ºC):-
Tempering heating temperature (ºC):520;
Tensile strength (σb/MPa): ≥980
The yield point (σs/MPa): ≥785
Elongation (δ5/%): ≥9
Section shrinkage (ψ/%): ≥45
Impact absorbing energy (Aku2/J): ≥47
Brinell hardness (HBS100/3000) (high temperature annealing or tempering): ≤207


4.Delievery condition:
1.Both end of each bar must be cut.
2.Show Heat No. on each bar
3.Surface condition: The surface of the bar shall be free cracks, scar and wrinkles at affect the use of the billets. 
In case there is the above-mentioned defect.it shall be removed.
4.The mill test certificate shall show the chemical composition, and it is guaranteed that the chemical composition 

5.Steel square bar sizes we can offer
Sizes:15X15mm-150X150mm
Length:1-10m ,as required

6.Capacity of our factory:3000tons per month

7.Delivery time : 7-30 days based on the sizes and quantity.


8.Payment term:TT or LC.

9.Applications of Square Bars
1): Can be used in many fields such as building, automobile, shipbuilding, petrochemical, machinery, medicine, food, electric power, energy, space, building and decoration, etc.
2): Can be made into mould template, mortise pin, column
3): This kind of steel have good mechanical property, is widely used in structural parts which may support stress alternation, especially made into some connecting rods, bolts, wheel gear...
4): This kind of steel is the most common blanks and materials of shaft parts.