Grade 304 (1.4301) dowel bar
Table of Content
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Product Specification
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Chemical Composition
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Physical Properties
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Dimensions
DETAILED INFORMATION
As well as grades 304 and 304L, stainless steel types 1.4301 and 1.4307 are also known as grades 304 and 304L. Due to its nominal composition of 18% chromium and 8% nickel, type 304 is still sometimes referred to by its old name 18/8.
In applications like sinks and saucepans, stainless steel type 304 is the dominant grade due to its ability to be deeply drawn.
It is used in heavy gauge components for improved weldability. Some products such as plate and pipe are available as “dual certified” materials that meet both 304 and 304L requirements.
304H, a high carbon content variant, is also available for use at high temperatures.
There may be other standards covering products sold. It is reasonable to expect that specifications in these standards will be similar but not necessarily identical to those given in this datasheet
The two grades of dowel bar held in stock are:
The grade 304 (1.4301) is suitable for most atmospheric and concrete covered environments.
For marine and corrosive environments, grade 316 (1.4401) is recommended.
Stainless steel dowel bars have a Proof Strength of 250 N/mm2 and an Ultimate Tensile Strength of 550 N/mm2.
The diameters of stainless steel dowel bars range from 6mm to 50mm.
Bars are available in stock lengths up to 6m and can be cut to length. Threaded ends with ISO metric threads can be supplied in lengths up to 1000mm for fixing applications.
Stainless Steel Dowel Bars
Dowel bars manufactured to BS6744 are available at Purohit pipes.
In terms of physical characteristics, stainless steel rebar has a proof strength of 500 N/mm2 and an ultimate tensile strength of 550 N/mm2.
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Specifications Of Dowel Bar
RAW MATERIAL QUALITY | YIELD STRENGTH MIN.(MPA) | TENSILE STRENGTH MIN. (MPA) |
S235 JR | 235 | 340 |
S275 JR | 275 | 410 |
S355 | 355 | 490 |
S355 JR J2 | 355 | 490 |
ASTM A 615 GRADE 40 | 280 | 420 |
ASTM A 615 GRADE 60 | 420 | 620 |
ASTM A 615 GRADE 75 | 520 | 690 |
ASTM A 615 GRADE 80 | 550 | 725 |
Chemical Composition 1.4301 Steel
Chemical Element | % Present |
Carbon (C) | 0.0 – 0.07 |
Chromium (Cr) | 17.50 – 19.50 |
Manganese (Mn) | 0.0 – 2.00 |
Silicon (Si) | 0.0 – 1.00 |
Phosphorous (P) | 0.0 – 0.05 |
Sulphur (S) | 0.0 – 0.03 |
Nickel (Ni) | 8.00 – 10.50 |
Nitrogen (N) | 0.0 – 0.11 |
Iron (Fe) | Balance |
Physical Properties
Physical Property | Value |
Density | 8.00 g/cm³ |
Melting Point | 1450 °C |
Thermal Expansion | 17.2 x10^-6 /K |
Modulus of Elasticity | 193 GPa |
Thermal Conductivity | 16.2 W/m.K |
Electrical Resistivity | 0.72 x10^-6 Ω .m |
Dimensions Of Dowel Bar
DIMENSIONS (MM) | L E N G T H | |||||||||||||
D | 250 | 300 | 350 | 400 | 450 | 500 | 550 | 600 | 650 | 700 | 750 | 900 | 1000 | |
I | 8 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
A | 10 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
M | 12 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
E | 14 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
T | 16 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
E | 18 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
R | 20 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
22 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
25 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
30 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
32 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
36 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
Grades Of Dowel Bar
Grades in accordance with BS EN 10088-1 |
Readily Available Dowel Bar Grades |
For structures or components with either a long design life or which are inaccessible for future maintenance |
For structures or components exposed to chloride contamination with no relaxation in durability design [e.g. concrete cover or waterproofing treatment requirements] |
Reinforcement bridging joints, or penetrating the concrete surface and also subject to chloride contamination [e.g. dowel bars or holding down bolts] |
Structures object to chloride contamination where reductions in normal durability requirements are proposed [e.g. reduced cover, concrete quality, or omission of waterproofing treatment] |
1.4301 [304] |
x |
1 |
1 |
5 |
3 |
1.4162 [New Grade] |
|
1 |
1 |
5 |
3 |
1.4436 [316] |
|
2 |
2 |
1 |
1 |
1.4429 |
|
2 |
2 |
1 |
1 |
1.4362 [New Grade] |
|
2 |
2 |
1 |
1 |
1.4462 F51 |
|
2 |
2 |
1 |
1 |
1.4529 |
|
4 |
4 |
4 |
4 |
1.4501 F55 |
|
4 |
4 |
4 |
4 |
Grade used for Dowel Bar which are not listed in BS6744 but commonly used |
|||||
1.4307 [304L] |
x |
1 |
1 |
5 |
3 |
1.4401 [316] |
x |
2 |
2 |
1 |
1 |
1.4404 [316L] |
x |
2 |
2 |
1 |
1 |
Sizes And Strengths Of Dowel Bar
SIZES AND STRENGTHS |
|
|
|
Dowel bar is generally supplied with a 0.2% proof of 250 N/mm² and a UTS of N/mm². Higher proof strength of 500 N/mm²and 650 N/mm²are available. |
|
|
|
DOWEL BAR 250 PROOF – 500 UTS |
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Ref |
Kg/m |
Ultimate tensile load kN |
Proof load 0.2% N/mm kN |
DB 5 |
0.154 |
9.5 |
4.7 |
DB 6 |
0.222 |
14 |
7 |
DB 8 |
0.395 |
25 |
12 |
DB 10 |
0.617 |
39 |
19 |
DB 12 |
0.888 |
56 |
28 |
DB 16 |
1.578 |
100 |
50 |
DB 20 |
2.466 |
157 |
78 |
DB 25 |
3.853 |
245 |
122 |
DB 32 |
6.313 |
402 |
201 |
DB 40 |
9.865 |
618 |
314 |
DB 50 |
15.41 |
981 |
490 |
Stainless Steel Dowel Bars
Product |
Material |
Grade |
Standard |
Diameter (mm) |
Diameter (inches) |
Stainless Steel Dowel Bar |
Austenitic 300 series |
Grade 200: 304/304L, 316/316L |
AISI, ASTM, BS, DIN, GB, JIS |
16 ~ 50 |
5/8″~ 2″ |
Duplex Stainless Steel Dowel Bar |
Duplex Stainless Steel |
Grade 500: S31803, S32205, S32304 |
AISI, ASTM, BS, DIN, GB, JIS |
16 ~ 50 |
5/8“~ 2“ |
Mild Carbon Steel Dowel Bar
Product |
Coating |
Steel Grade |
Coated Standard |
Diameter (mm) |
Diameter (inches) |
Dowel Bar |
Black(uncoated) |
BS4449-grade250, ASTM A615/A615M, Gr60, Gr40, Grade500N, Q235B, SS400, S275JR, etc |
AISI, ASTM, BS, DIN, GB, JIS |
16 ~ 50 |
5/8″~ 2″ |
Epoxy coated dowel bar |
Epoxy coated |
ASTM A1078 |
16 ~ 50 |
5/8“~ 2“ |
|
Galvanized dowel bar |
Galvanized |
BS EB ISO 1461:2009; AS/NZS 4680 |
16 ~ 50 |
5/8“~ 2“ |
Bar & Section - Up to 160mm Dia / Thickness
Mechanical Property |
Value |
Proof Stress |
190 Min MPa |
Tensile Strength |
500 to 700 MPa |
Elongation A50 mm |
45 Min % |
Hardness Brinell |
215 Max HB |
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