Quality Spring Steel Material for Heavy-Duty Structural Use

• Customization: Available
• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Model NO.: Round bar
• Technique: Forged
• Shape: Bar
• Surface Treatment: Black or as Required
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Length: 2500-5500mm
• Transport Package: N/M
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7228400000
• Production Capacity: 5000ton/Month

Product Description

APPLICATION:

For the pinnacle of construction excellence, trust our Robust S235j2 Structural Steel Rod. This extraordinary product is meticulously crafted for construction steel structures, offering phenomenal performance in welding, riveting, and bolted assemblies. Designed to withstand and excel at ambient temperatures, our steel rod is your go-to choice for reliability and strength.

TECHNOLOGICAL INFORMATION:

Huangshi Smooth Industry and Trade Co., Ltd is proud to present steel that is fully killed and superbly weldable, embodying top-tier quality and dependability to meet and exceed all your industrial demands with confidence.

SEMI-FINISHED PRODUCTS:

Our semi-finished products are the epitome of excellence, featuring fully killed, weldable steel that lays the groundwork for your robust and enduring construction projects. Trust in our material to be the cornerstone of your architectural success.

CHEMICAL COMPOSITION:

C	Mn	Si	P	S	Cr	Ni	Mo	V	Nb	Ti	Al	Cu
Max 0,20	Max 1,60	Max 0,55	Max 0,025	Max 0,025	-	-	-	-	-	-	-	Max 0,55

MECHANICAL PROPERTIES:

Effect of the cross-section on mechanical properties

Ultimate tensile strength

Thickness, mm

< 3

> 3-100

> 100-150

> 150-250

Rm, MPa

510-680

470-630

450-600

450-600

Yield stress

Thickness, mm

≤ 16

> 16-40

> 40-63

> 63-80

> 80-100

> 100-150

> 150-200

> 200-250

Re, MPa

≥ 355

≥ 345

≥ 335

≥ 325

≥ 315

≥ 295

≥ 285

≥ 275

Elongation

Thickness, mm

≤ 1

> 1-1.5

> 1.5-2

> 2-2.5

> 2.5-3

A80mm, %, longitudinal samples

≥ 14

≥ 15

≥ 16

≥ 17

≥ 18

A80mm, %, transverse samples

≥ 12

≥ 13

≥ 14

≥ 15

≥ 16

Thickness, mm

3-40

> 40-63

> 63-100

> 100-150

> 150-250

A, %, longitudinal samples

≥ 22

≥ 21

≥ 20

≥ 18

≥17

A, %, transverse samples

≥ 20

≥ 19

≥ 18

≥ 18

≥ 17

Impact test at -20°C

Thickness, mm

> 10-400 27

KV, J

TECHNOLOGICAL TREATMENT PROCESSES:

Technological treatment processes			Possible application	Temperature, °C
Hot forming	Forging		+	(1150 - 800)
	Rolling		+	(1150 - 800)
Treatment	Heat treatment	Quenching	-	-
		Tempering	-	-
	Precipitation strengthening	Supersaturation	-	-
		Ageing	-	-
	Annealing	Normalising	+	(890 - 920)
		Soft annealing	+	< 580
Thermochemical treatment	Carburising		-	-
	Other		-	-

INTERNATIONAL STEEL GRADES:

ISO		CEN		Russia
~E355-D	ISO 630:1995	S355J2G3	EN 10025:1993	~17GIS	GOST 19281 - 89
US		Japan		China
~A 706	ASTM A 706 - 00	~SM 490 A	JIS G 3106 1995	~16Mn	GB T 8164 - 93