Alloy Steel 1.6580/30crnimo8 Round Tube Rod Pipe Sheet Plate Round Bar

• Type: Round
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Stainless Steel Scrap
• Technique: Forged
• Shape: Plate
• Surface Treatment: Black or as Required
• Model NO.: Round bar
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Transport Package: Wooden
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7214100000
• Production Capacity: 5000 Ton/Year

Product Description

APPLICATION:

Steel susceptible to very loaded axles, shafts, crankshafts, gears. Also adjusted for the parts which are exposed on variable movements bending, twisting, wearing, tear etc.

TECHNOLOGICAL INFORMATION:

After soft annealing steel becomes machinable ( by improved shearability) and adjusted for the mechanical cutting.

SEMI-FINISHED PRODUCTS:

After soft annealing steel becomes machinable ( by improved shearability) and adjusted for the mechanical cutting.

CHEMICAL COMPOSITION:

C	Mn	Si	P	S	Cr	Ni	Mo	V	W	Ti	Cu	Inne
0,26 - 0,34	0,50 - 0,80	Max 0,40	Max 0,025	Max 0,035	1,80 - 2,20	1,80 - 2,20	0,30 - 0,50	-	-	-	-	-

MECHANICAL PROPERTIES:

Mechanical properties of a product with diameter d ≤ 16 mm
Property		Symbol		Unit		After heat treatment
Ultimate tensile strength		Rm		MPa		1250 - 1450
Yield stress		Re (Rp0,2)		MPa		≥ 1050
Elongation		A		%		≥ 9
Reduction of area		Z		%		≥ 40
Impact energy		KV		J		≥ 30
The influence of the element's cross-section on mechanical properties
Diameter d, mm Thickness of the flat bar t, mm	16 - 40 8 - 20		40 - 100 20 - 60		100 - 160 60 - 100		160 - 250 100 - 160
Rm, MPa	1250 - 1450		1000 - 1300		1000 - 1200		900 - 1100
Re (Rp0,2), MPa	≥ 1050		≥ 900		≥ 800		≥ 700
A, %	≥ 9		≥ 10		≥ 11		≥ 12
Z, %	≥ 40		≥ 45		≥ 50		≥ 50
KV, J	≥ 30		≥ 35		≥ 45		≥ 45

TECHNOLOGICAL TREATMENT PROCESSES:

Technological treatment processes			Possible application	Temperature, °C
Hot forming	Forging		+	(1050 - 850)
	Rolling		+	(1180 - 850)
Treatment process	Heat treatment	Quenching	+	830-860/w,o
		Tempering	+	540 - 660
	Precipitate strengthening	Supersaturation	-	-
		Ageing	-	-
	Annealing	Normalising	+	(850 - 880)
		Soft annealing	+	(650 - 700)
Thermochemical treatment	Carburising		-	-
	Other		-	-

INTERNATIONAL STEEL GRADES:

ISO		European Union		Russia
31CrNiMo8	ISO 683-1 1987	30CrNiMo8	EN 10083-1 1996	-	-
US		Japan		China
-	-	-	-	-	-