China Origin Smooth Steel Hollow Bar for Carbon Steel Construction

• Customization: Available
• Type: Carbon Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Model NO.: carbon steel
• Composition: Stainless Steel Scrap
• Technique: Forged
• Shape: Bar
• Surface Treatment: Polished
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Die Steel Bar
• Transport Package: N/M
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7228400000
• Production Capacity: 5000ton/Month

Product Description

Product Description

JIS G3101 SS400 Steel Equivalent Material Properties Specification Composition Density Strength

JIS G3101 SS400 Steel

SS400 steel is the most commonly used hot-rolled structural steel (formerly known as SS41) in Japan, and is called general structural rolled steel in JIS G3101. SS400 material is cheap and versatile, and plays an important role in construction, bridges, civil engineering and mechanical equipment structures. Its appearance includes round steel, flat steel, steel plates, steel strips and profiles.

Material SS400 Meaning

SS400 Steel meaning: SS is the abbreviation of Steel Structure, 400 means that the tensile strength is ≥ 400 MPa.
SS41 Meaning: 41 means that the tensile strength is 41kgf/mm2 or higher.

Datasheet and Specification

The following table shows the SS400 material specification and datasheet, including chemical composition, mechanical properties, physical properties and equivalent, etc.

Chemical Composition

The following table shows JIS SS400 steel chemical composition, please note that the carbon (C) content is not specified in JIS G3101, only the phosphorus (P) and sulfur (S) content.

Chemical Composition, %
Country (Region)	Standard	Steel Grade	C	Mn	P, ≤	S, ≤
Japan	JIS G3101	SS400	-	-	0.05	0.05

Note: If necessary, alloy elements not listed in this table can be added.

Physical Properties

The following table shows JIS SS400 material properties, including density and specific gravity, melting point, specific heat capacity, electrical resistivity, elastic modulus, thermal conductivity, linear expansion coefficient, Young's modulus, magnetic permeability, etc.
Notes:

• 10-6·K-1 = 10-6/K
• 1 Ω·mm²/m = 1 μΩ·m
• 1 g/cm3 = 1 kg/dm3 = 1000 kg/m3
• 1 GPa = 1 kN/mm2
• 1 MPa = 1 N/mm2

Density and specific gravity, g/cm3	7.85
melting point, ºC	1494-1527
Specific heat capacity, J/(Kg·K)	473 at 20 ºC
Electrical resistivity, μΩ·m	About 0,15 (20 ºC)
Long. elastic modulus, GPa	206
Tr. modulus of elasticity, GPa	79
Shear modulus, GPa	79
Thermal conductivity, (W/m·K)	57-60
Linear expansion coefficient, (10-6/K)	11.3-11.6 (20 ºC)
Young's modulus, GPa	206
Poisson's ratio	0.3
Magnetic permeability, mm2/s	13.9

Mechanical Properties

The following table shows SS400 material mechanical properties, such as yield point or yield strength (yield stress), tensile strength and elongation.

Standard

Steel

Yield strength (≥, MPa); Steel thickness (t) in mm.

Tensile Strength (MPa)

Steel thickness (t) in mm.

Test piece

Elongation (≥, %)

Bendability

t≤16

16<t≤40

40<t≤100

>100

Bending angle

Inter radius

Test piece

JIS G3101

SS400

245

235

215

205

400-510

plates and sheets, steel strip in coils, flats and sections, t≤5

No. 5

21

180°

1/2 thickness

No. 1

plates and sheets, steel strip in coils, flats and sections, 5<t≤16

NO. 1A

17

plates and sheets, steel strip in coils, flats and sections, 16<t≤50

NO. 1A

21

plates and sheets, steel strip in coils, flats and sections, t>40

No. 4

23

side or distance across flats of steel bars ≤25

No. 2

20

180°

1.5 x diameter, side, or distance across flats

No. 2

side or distance across flats of steel bars >25

No. 14A

22

Standard Thickness

Note: The thickness in brackets is not recommended.

SS400 Steel Plate Thickness in mm.
1.2	1.4	1.6	1.8	2.0	2.3	2.5	(2.6)	2.8
(2.9)	3.2	3.6	4.0	4.5	5.0	5.6	6.0	6.3
7.0	8.0	9.0	10.0	11.0	12.0	12.7	13.0	14.0
15.0	16.0	(17.0)	18.0	19.0	20.0	22.0	25.0	25.4
28.0	(30.0)	32.0	36.0	38.0	40.0	45.0	50.0

Thickness Tolerance

The following table summarizes JIS SS400 steel thickness tolerances. With the consent of the delivery party, you can limit the tolerance of this table to positive or negative. However, the total tolerance must be equal to the total tolerance range in the table.
Notes:

• If the thickness is 40 mm or more, the positive side tolerance can be relaxed through mutual negotiation.
• The thickness of more than 350 mm should be agreed by both parties.
• The width and thickness tolerance of 5000 mm depends on the agreement between the two parties.

Steel thickness tolerances in mm
Thickness (t)	Plate Width (W)<1600	1600≤W<2000	2000≤W<2300
t<1.25	±0.16	-	-
1.25≤t<1.60	±0.18	-	-
1.60≤t<2.00	±0.19	±0.23	-
2.00≤t<2.50	±0.20	±0.25	-
2.50≤t<3.15	±0.22	±0.29	±0.29
3.15≤t<4.00	±0.24	±0.34	±0.34

 

Material thickness tolerance in mm
Thickness (t)	Steel Plate width (W)<1600	1600≤ W <2000	2000≤ W <2500	2500≤ W <3150	3150≤ W <4000	4000≤ W <5000
4.00≤t<5.00	±0.45	±0.55	±0.55	±0.65	-	-
5.00≤t<6.30	±0.50	±0.60	±0.60	±0.75	±0.75	±0.85
6.30≤t<10.00	±0.55	±0.65	±0.65	±0.80	±0.80	±0.90
10.00≤t<16.00	±0.55	±0.65	±0.65	±0.80	±0.80	±1.00
16.00≤t<25.00	±0.65	±0.75	±0.75	±0.95	±0.95	±1.10
25.00≤t<40.00	±0.70	±0.80	±0.80	±1.00	±1.00	±1.20
40.00≤t<63.00	±0.80	±0.95	±0.95	±1.10	±1.10	±1.30
63.00≤t<100.00	±0.90	±1.10	±1.10	±1.30	±1.30	±1.50
100.00≤t<160.00	±1.30	±1.50	±1.50	±1.70	±1.70	±1.90
160.00≤t<200.00	±1.60	±1.80	±1.80	±1.90	±1.90	±2.10
200.00≤t<250.00	±1.80	±1.90	±1.90	±2.00	±2.00	±2.20
250.00≤t<300.00	±2.00	±2.10	±2.10	±2.20	±2.20	±2.50
300.00≤t≤350.00	±2.10	±2.30	±2.30	±2.40	±2.40	±2.80

Standard Steel Plate Width

Standard width of steel plate and steel belt (mm)
600	630	670	710	750	800	850	900	914	950
1000	1060	1100	1120	1180	1200	1219	1250	1300	1320
1400	1500	1524	1600	1700	1800	1829	1900	2000	2100
2134	2438	2500	2600	2800	3000	3048

Standard Length of Steel Plate

Standard length of steel plate (mm)
1829	6096	9144
2438	7000	10000
3048	8000	12000
6000	9000	12192

Material SS400 Equivalent Grades

The following table shows JIS SS400 steel equivalent materials, including the European EN standard (UK BSI, German DIN), American ASTM standard, international ISO standard, Chinese GB standard, Indian standard. (for reference only)

SS400 Equivalent Steel Grade

Japan

US

European Union

ISO

China

Canada

India

Standard

Steel

Standard

Grade

Standard

Steel

Standard

Grade

Standard

Steel

Standard

Grade (SI)

Standard

Grade

JIS G3101

SS400

ASTM A36

A36 steel

EN 10025-2

S235 (S235JR)

ISO 630

S235

GB/T 700

Q235

CSA G40.21

44W (300W)

IS 2062

E250

Detailed Photos