Rolled alloy steel with special finishing in bars

Rolled products are made of alloy structural steel according to GOST 4543 or according to the technical specifications agreed with the customer.

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Specifications

Packaging and labeling

Purpose

The rolles steel is produced for the manufacture of various products, machine parts and mechanisms.

Characteristics

Packaging and labeling

 

Packaging

Delivery status
Charted rolled products	Annealed rolled products		Packaging
	The full annealing	A spheroid. annealing	Without conservation	With conservation	Soft without preservation	Soft with preservation
+	+		+	+	+	+

Specifications

 

Technical characteristics:

Ø rolled, mm	Bar length, m	Length tolerance, mm	Bundle weight, tn
5 ÷ 50	2,5 ÷ 6,5	-0,0/+50,0 or -0,0/+100,0	1 ÷ 5

Mechanical properties of rolled products — according to GOST 4543 or according to agreed technical specifications or TS

Precision quality and Surface quality:

Rolled precision (quality)	Surface quality group
h9; h10; h11; h12	C

The limit deviations according to GOST 14955:

Diameter, mm	Maximum deviations by quality, mm
	h9	h10	h11	h12
9,00 – 10,00	-0,036	-0,058	-0,090	-0,150
10,25 – 11,00	-0,043	-0,070	-0,110	-0,180
11,25 – 18,00	-0,043	-0,070	-0,110	-0,180
18,50 – 24,00	-0,052	-0,084	-0,130	-0,210
25,00 – 30,00	-0,052	-0,084	-0,130	-0,210
31,00 – 50,00	-0,062	-0,100	-0,160	-0,250

Rolled surface quality according to GOST 14955:

Steel surface finishing group	Qualifications	Surface roughness according to GOST2789-73		Name of permissible surface defects	Maximum depth of permissible defects
		Parameter Ra, microns no more	Base length, mm
A	h5, h6, h7,	0,32	0,25	Defects are not allowed	Defects are not allowed
	h8, h9, h10
B	h6, h7, h8,	0,63	0,8
	h9, h10, h11
C	h7, h8, h9, h10, h11	1,25	0,8
G	h8, h9, h10, h11	2,5	0,8	Individual defects of mechanical origin	½ maximum deviation in diameter
D	h9, h10, h11, h12	-	-	Individual defects of mechanical origin	Maximum deviation in diameter
E	h8, h9	-	-	Longitudinal risks	½ of the maximum deviation in diameter

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