Stainless steel bars for concrete reinforcement

Stainless steel bars for concrete reinforcement
Supported standards JIS G4322 Stainless steel bars for concrete reinforcement
Type code SUS304-SD, SUS410-SD

Product catalog
(Stainless steel bars for concrete reinforcements SUSCON catalog)

JIS products (JIS G 4322)

Features

  • Austenite stainless steel reinforcement bars made from SUS304-SD have excellent durability not only in concrete but also in outdoor environment to salt damage, and additionally are non-magnetic.
  • Ferrite stainless steel reinforcement bars made from SUS410-SD have excellent durability in the material itself that can replace steel reinforcement bars with zinc coating or epoxy resin coatings.

Types

  • Contact our sales people for types or strength categories other than those given above.
Type code Equivalent steel Strength category Dimensions Shape Length
JIS G 4322
SUS304-SD
SUS304 295B D10 to D38 Ridged (knotted) 4.0 to 6.0m
Tolerance
+40mm−0mm
SIS304N2 345
390
JIS G 4322
SUS410-SD
SUS410L 295A
345

Chemical components

(%)

Equivalent steel C Si Mn P S Ni Cr N Nb
SUS304 0.08
or less
1.00
or less
2.00
or less
0.045
or less
0.030
or less
8.00
to 10.50
18.00
to 20.00
- -
SUS304N2 0.08
or less
1.00
or less
2.50
or less
0.045
or less
0.030
or less
7.50
to 10.50
18.00
to 20.00
0.15
to 0.30
0.15
or less
SUS410L 0.030
or less
1.00
or less
1.00
or less
0.040
or less
0.030
or less
0.60
or less
11.00
to 13.50
- -

Mechanical properties

Type code Strength category 0.2% yield strength
(N/mm2 )
Tensile strength
(N/mm2 )
Elongation (%) Bending
JIS G 4322
SUS304-SD
295B 295 to 390 440 or more D22 or less to 16 or more
D25 or less to 17 or more
Bends 180° without cracks
345 345 to 440 490 or more D22 or less to 18 or more
D25 or less to 19 or more
Bends 180° without cracks
390 390 to 510 560 or more D22 or less to 16 or more
D25 or less to 17 or more
Bends 180° without cracks
JIS G 4322
SUS410-SD
295A 295 or more 440 to 600 D22 or less to 16 or more
D25 or less to 17 or more
Bends 180° without cracks
345 345 to 440 490 or more D22 or less to 18 or more
D25 or less to 19 or more
Bends 180° without cracks

Dimensions, weight and tolerances for bumps

Name Nominal diameter
(mm)
Nominal perimeter
(cm)
Nominal cross section area
(cm²)
Maximum average gap of ridges
(mm)
Height of ridges Maximum value of total of gaps between ridges
(mm)
Minimum angle of ridge to axis
(°)
Unit mass
(kg/m)
Minimum value
(mm)
Minimum value
(mm)
SUS304-SD SUS410-SD
D10 9.53 3.0 0.7133 6.7 0.4 0.8 7.5 45 0.566 0.553
D13 12.7 4.0 1.267 8.9 0.5 1.0 10.0 1.00 0.982
D16 15.9 5.0 1.986 11.1 0.7 1.4 12.5 1.57 1.54
D19 19.1 6.0 2.865 13.4 1.0 2.0 15.0 2.27 2.22
D22 22.2 7.0 3.871 15.5 1.1 2.2 17.5 3.07 3.00
D25 25.4 8.0 5.067 17.8 1.3 2.6 20.0 4.02 3.93
D29 28.6 9.0 6.424 20.0 1.4 2.8 22.5 5.09 4.98
D32 31.8 10.0 7.942 22.3 1.6 3.2 25.0 6.30 6.16
D35 34.9 11.0 9.566 24.4 1.7 3.4 27.5 7.59 7.41
D38 38.1 12.0 11.40 26.7 1.9 3.8 30.0 9.04 8.84

Minister of Land, Infrastructure, Transport and Tourism Certified Product

Features

These stainless steel reinforcing bars, which have received certification from the Minister of Land, Infrastructure, Transport and Tourism as complying with Article 37-2 of the Building Standards Act, are characterized by excellent durability and their non-magnetic properties.
They are used in all or part of building frames where non-magnetic properties are needed such as shrines, temples, and cultural assets that require durability over long periods.

Types

Type code Equivalent steel Strength category Dimensions Shape Standard strength F value
AUS304-SD295 SUS304 295B D10 to D38 Ridged (knotted) 295N/mm2

Chemical components

Based on SUS304 (JIS G 4322)

Mechanical properties

Type code Strength category 0.2% yield strength (N/mm2 ) Tensile strength (N/mm2 ) Yield rate Elongation (%) Bending
AUS304-SD295 295B 295 to 390 440 or more 60% or less 40 or more Bends 180° without cracks

Dimensions, weight and tolerances for bumps

Based on JIS

Small diameter stainless steel reinforcing bar ASCON-CD4·CD6

Features

The chemical composition of these small diameter stainless steel reinforcing bars is based on SUS304 under the JIS G 4308 standard, and the strength are at levels that satisfy JIS G 3532 (iron wire) for the welded steel wire and wire for the reinforcement of concrete, SMW-I. They are non-magnetic and have excellent high-strength durability. Small diameter stainless steel rods are cold-reduced to form gap with ridges.
The reinforcing bars are used as reinforcing materials for thin concrete panels (such as buried formworks) and other applications, and are also used in green panels (for green walls and the like) by taking advantage of the thin diameter and knotty shape, which vining plants can easily wrap around.

Product specifications

Type of steel Name Nominal diameter (mm) Nominal cross section area (cm2) Yield strength (MPa) Tensile strength (MPa)
SUS304 equivalent CD4 4.0 0.126 440 or more 540 or more
CD6 6.0 0.283
  • Shape and mechanical properties conform to JIS G 3532 (iron wire, SWN-I)
Photo

Embedded forms reinforced with ASCON-D4

Embedded forms reinforced with ASCON-D4

Technical data

Corrosion resistance in concrete (Reference photograph)

  • Chloride ion concentration9.0, 15.0kg/m3
  • Cement typeNormal Portland cement
  • Water-cement ratio60%
  • Trial reinforcement rods (D13)SUS304 reinforcement rods, SUS410L reinforcements rods, epoxy coated reinforcement rods, zinc coated reinforcement rods, normal reinforcement rods
  • Trial methodVarious kinds of reinforcement rod are embedded in concrete with chlorine content and then subjected to 770 days of repeating dry for 4 days, wet for 3 days each cycle.
Appearance of test sample
Appearance of test sample
Type Chloride ion concentration 9 kg/m3 Chloride ion concentration 15 kg/m3
SUS304 steel rebar
SUS410L steel rebar
Epoxy coated rebar
Zinc coated steel rebar
Normal steel rebar

Magnet permeability (reference values)

  • Trial reinforcement rods (D16)SUS304 reinforcement rods, SUS304N2 reinforcement rods
  • Bending radius2.5d
  • Bending angle180 degrees
Magnet permeability

Adhesion strength (reference value)

  • Test standardConstruction testing center standard: JSTM C 2101
  • Cement typeNormal Portland cement
  • Water-cement ratio69%
  • Trial reinforcement rods (D19)SUS304 reinforcement rods, SUS304N2 reinforcement rods, SUS410L reinforcement rods, normal reinforcement rods
Adhesion strength
Type Maximum adhesion stress
(N/mm2)
Rate of maximum adhesion stress for normal steel rebar
(%)
SUS304 steel rebar 14.1 90
SUS304N2 steel rebar 14.9 96
SUS410L steel rebar 15.0 96
Normal steel rebar 15.6 -

Comparison between stainless steel reinforcement rods and epoxy coated reinforcement rods (from design guidelines)

  SUS304-SD steel rebar SUS410-SD steel rebar Epoxy coated rebar
Corrosion limit chloride ion concentration 15kg/m3 9kg/m3 1.2kg/m3 *1
Cracking width limit value for concrete steel corrosion 0.5mm Smaller of 0.005 c or 0.5 mm 0.0055c *2
Concreate adhesion strength Normal steel rebar and equivalent Normal steel rebar and equivalent 85% of normal steel rebar
During installation and repair of damage from bending Repair not necessary Repair not necessary Touch up repair needed
Repair of end surface at cut Repair not necessary Repair not necessary Touch up repair needed
Joint Welding joint and stud joint cannot be used in general Welding joint and stud joint cannot be used in general Gas stud joint possible but requires removal of coating for stud joint end surface
Magnetic Non-magnetic Strong magnetic Strong magnetic
  • Chloride ion concentration in epoxy coating nearest steel material
  • c indicates cover (mm)

Standards

  1. Japan Industrial Standards: JIS G4322 Stainless steel bars for concrete reinforcement
  2. Design guidelines (civil engineering): Concrete library 3130 Design Guidelines for Concrete Structures using Stainless Steel Reinforcement Rods (draft)

Minister of Land, Infrastructure, Transport and Tourism Certified AUS304-SD295 Certification and Designation

Written recognition
Written recognition
Certificate of designation
Certificate of designation

Applications

Saiwaicho wharf core reinforcement
Application Saiwaicho wharf core reinforcement
Field Civil engineering
Shape Steel reinforcement
Type of steel SUS304-SD390
Reason Corrosion resistance
Utakokakyo  expansion joint transfer unit
Application Utakokakyo expansion joint transfer unit
Field Civil engineering
Shape Steel reinforcement
Type of steel SUS304-SD390
Reason Corrosion resistance
The insert used for the installation of electricity cable racks inside the shield tunnel
Application The insert used for the installation of electricity cable racks inside the shield tunnel
Field Civil engineering
Shape Steel reinforcement
Type of steel SUS304-SD295B
Reason Corrosion resistance
An embedded -type water stoppage joint "Keep dry E"
Application An embedded -type water stoppage joint "Keep dry E"
Field Civil engineering
Shape Steel reinforcement
Type of steel SUS304-SD295B
Reason Corrosion resistance
Okinawa Institute of Science and Technology Graduate University Research Building Skeleton
Application Okinawa Institute of Science and Technology Graduate University Research Building Skeleton
Field Building construction
Shape Steel reinforcement
Type of steel SUS304-SD295B, SUS304-SD390
Reason Non-magnetic
Important Cultural Asset Osamu Dazai Memorial Museum Brick wall seismic reinforcement
Application Important Cultural Asset Osamu Dazai Memorial Museum Brick wall seismic reinforcement
Field Building construction
Shape Steel reinforcement
Type of steel SUS304-SD295B
Reason Corrosion resistance
Aomori Museum of Art covering steel
Application Aomori Museum of Art covering steel
Field Building construction
Shape Steel reinforcement
Type of steel SUS304-SD295B
Reason Corrosion resistance
Kyushu University Research Institute of Superconductor Science and Systems complete skeleton
Application Kyushu University Research Institute of Superconductor Science and Systems complete skeleton
Field Building construction
Shape Steel reinforcement
Type of steel SUS304-SD295B, SUS304-SD390
Reason Non-magnetic
Chuo Expressway Ozawa River bridge PC floor joint
Application Chuo Expressway Ozawa River bridge PC floor joint
Field Civil engineering
Shape Steel reinforcement
Type of steel SUS410-SD345
Reason Corrosion resistance
Irabu Bridge paving reinforcements
Application Irabu Bridge paving reinforcements
Field Civil engineering
Shape Steel reinforcement
Type of steel SUS304-SD295B
Reason Corrosion resistance
National Treasure Kiyomizudera lock bolts
Application National Treasure Kiyomizudera lock bolts
Field Civil engineering
Shape Steel reinforcement
Type of steel SUS304-SD390
Reason Corrosion resistance
San-en Nanshin Expressway Wall rail V-cut ground reinforcement girders
Application San-en Nanshin Expressway Wall rail V-cut ground reinforcement girders
Field Civil engineering
Shape Steel reinforcement
Type of steel SUS410-SD345
Reason Corrosion resistance
National Route 153 primary culvert Wall rail paving steel reinforcement
Application National Route 153 primary culvert Wall rail paving steel reinforcement
Field Civil engineering
Shape Steel reinforcement
Type of steel SUS410-SD345
Reason Corrosion resistance
Okinawa Prefecture Water Purification Plant fence Concrete pillars
Application Okinawa Prefecture Water Purification Plant fence Concrete pillars
Field Civil engineering
Shape Steel reinforcement
Type of steel SUS410-SD345
Reason Corrosion resistance

Product inquiries

Phone

AICHI STEEL Corporation
Sales and Planning Division

TEL +81 (52) 603-9362

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