What are Stainless Steel Grades for Rebar?
There are different stainless steel grades used in stainless steel rebar. In this case, the question “What are Stainless Steel Grades for Rebar?” comes to mind. Stainless steel grades used in stainless steel rebar can be divided into two categories as “stainless steel rebar” and “duplex stainless steel rebar”. Duplex stainless steel consists of ferritic and austenitic stainless steels. They are called “duplex stainless” because they have properties from these two different steel grains.
Stainless steel grades used in stainless steel rebar are selected depending on specific applications and environmental conditions. So, what are the stainless steel grades used in stainless steel rebar? If we divide the standards into groups, the table is as follows;
| Stainless Steel Rebar | Duplex Stainless Steel Rebar |
|---|---|
| 1.4301 | 1.4362 |
| 1.4404 | 1.4482 |
| 1.4436 |
1.4301 Stainless Steel Standard
It is one of the most widely used stainless steel grades. 1.4301 / AISI 304 is a standard austenitic chromium-nickel stainless steel. It has high corrosion resistance and can be easily shaped. Application areas; Chemical and petrochemical industry, petroleum industry and food industry and equipment. 1.4301 / AISI 304; It can be found as plate, bar wire, pipe, fastener, forging / casting parts and finished parts.
| Material No | EN Definition | AISI/SAE | UNS |
|---|---|---|---|
| 1.4301 | X5CrNi18-10 | 304 | S30400 |
Chemical Component
| C % | Si≤ % | Mn ≤ % | P ≤ % | S ≤ % | Cr % | Ni % | N % |
|---|---|---|---|---|---|---|---|
| ≤ 0.07 | 1.00 | 2.00 | 0.045 | 0.015 | 17.5-19.5 | 8.00-10.5 | ≤ 0.11 |
Mechanical Properties 20°
| Hardness HB 30≤ HB | 0.2% Yield Strength Rp ≥ N/mm² | Tensile Strength Rm N/mm² | Elongation A5 ≥ % | Modulus of Elasticity kN/mm² |
|---|---|---|---|---|
| 215 | 190 | 500-700 | 45/35 | 200 |
Physical Properties 20°
| Density g/cm³ | Specific Heat Capacity J/kg K | Thermal Conductivity W/m K | Electric Resistance Ω mm²/m |
|---|---|---|---|
| 7.9 | 500 | 15 | 0.73 |
1.4404 Stainless Steel Standard
1.4404 / AISI 316 L is an austenitic chromium-nickel-molybdenum stainless steel with low carbon content. It is stable against chloric environments and non-oxidizing acids. Application areas; apparatus, textile industry, paper industry, dairy products, brewery construction. 1.4404 / AISI 316 L; It can be found in plate, bar wire, pipe, fastener, forging / casting parts and finished parts.
Chemical Component
| C % | Si≤ % | Mn ≤ % | P ≤ % | S ≤ % | Cr % | Ni % | N % | Mo % |
|---|---|---|---|---|---|---|---|---|
| ≤ 0.030 | 1.00 | 2.00 | 0.045 | 0.015 | 16.5-18.5 | 10.0-13.0 | ≤ 0.11 | 2.00-2.50 |
Mechanical Properties 20°
| Hardness HB 30≤ HB | 0.2% Yield Strength Rp ≥ N/mm² | Tensile Strength Rm N/mm² | Elongation A5 ≥ % | Modulus of Elasticity kN/mm² |
|---|---|---|---|---|
| 215 | 200 | 500-700 | 40/30 | 200 |
Physical Properties 20°
| Density g/cm³ | Specific Heat Capacity J/kg K | Thermal Conductivity W/m K | Electric Resistance Ω mm²/m |
|---|---|---|---|
| 8 | 500 | 15 | 0.75 |
1.4436 Stainless Steel Standard
1.4436 / AISI 316 austenitic chromium-nickel-molybdenum stainless steel. Application areas; Cellulose industry and textile industry. 1.4404 / AISI 316 L; It can be found as plate, bar wire, pipe, fastener, forging / casting parts and finished parts.
| Material No | EN Definition | AISI/SAE | UNS |
|---|---|---|---|
| 1.4436 | X3CrNiMo17-13-3 | 316 | S31600 |
Chemical Component
| C % | Si≤ % | Mn ≤ % | P ≤ % | S ≤ % | Cr % | Ni % | N % | Mo % |
|---|---|---|---|---|---|---|---|---|
| ≤ 0.05 | 1.00 | 2.00 | 0.045 | 0.015 | 16.5-18.5 | 10.5-13.0 | ≤ 0.11 | 2.50-3.00 |
Mechanical Properties 20°
| Hardness HB 30≤ HB | 0.2% Yield Strength Rp ≥ N/mm² | Tensile Strength Rm N/mm² | Elongation A5 ≥ % | Modulus of Elasticity kN/mm² |
|---|---|---|---|---|
| 215 | 200 | 500-700 | 40/30 | 200 |
Physical Properties 20°
| Density g/cm³ | Specific Heat Capacity J/kg K | Thermal Conductivity W/m K | Electric Resistance Ω mm²/m |
|---|---|---|---|
| 8 | 500 | 15 | 0.75 |
1.4362 Stainless Steel Standard
The trade name is Alloy 2304, Lean Duplex. 1.4362 / Alloy 2304 is an austenite-ferritic chromium-nickel stainless steel. 1.4362 is one of the DUPLEX stainless steels. Yield strength is significantly higher than standard austenitic steels. It has unique properties such as corrosion resistance, resistance to corrosion cracking, high tensile and yield strength. Application areas; Apparatus, tool making. 1.4362 / Alloy 2304; It can be found as plate, pipe, fastener, forging / casting parts and finished parts.
| Material No | EN Definition | Alloy | UNS |
|---|---|---|---|
| 1.4362 | X2CrNiN23-4 | 2304 | S32304 |
Chemical Component
| C % | Si≤ % | Mn ≤ % | P ≤ % | S ≤ % | Cr % | Ni % | N % | Mo % | Cu % |
|---|---|---|---|---|---|---|---|---|---|
| ≤ 0.030 | 1.00 | 2.00 | 0.035 | 0.015 | 22.0-24.0 | 3.50-5.50 | 0.05-0.20 | 0.10-0.60 | 0.10-0.60 |
Mechanical Properties 20°
| Hardness HB 30≤ HB | 0.2% Yield Strength Rp ≥ N/mm² | Tensile Strength Rm N/mm² | Elongation A5 ≥ % | Modulus of Elasticity kN/mm² |
|---|---|---|---|---|
| 260 | 400 | 600-830 | 25 | 200 |
Physical Properties 20°
| Density g/cm³ | Specific Heat Capacity J/kg K | Thermal Conductivity W/m K | Electric Resistance Ω mm²/m |
|---|---|---|---|
| 7.8 | 500 | 15 | 0.8 |
1.4482 Stainless Steel Standard
1.4482 -ACX920 is a low alloy Duplex stainless steel. It consists of austenite and ferrite phases. It provides high yield strength, good formability and corrosion resistance. Application areas; food industry, storage tanks, tube pipes, pedestrian bridges, cable trays, clamps. 1.4482; Sheet, plate, steel coil, steel pipe, forging can be used in other material applications.
| Material No | EN Definition | UNS |
|---|---|---|
| 1.4482 | X2CrMnNiMoN21-5-3 | S32001 |
Chemical Component
| C % | Si≤ % | Mn ≤ % | P ≤ % | S ≤ % | Cr % | Ni % | N % | Mo % |
|---|---|---|---|---|---|---|---|---|
| 0.03 | 0.75 | 5.00 | 0.030 | 0.010 | 21.50 | 3.00 | 0.17 | 0.60 |
Mechanical Properties 20°
| Hardness HB 30≤ HB | 0.2% Yield Strength Rp ≥ N/mm² | Tensile Strength Rm N/mm² | Elongation A5 ≥ % | Modulus of Elasticity kN/mm² |
|---|---|---|---|---|
| 123-321 | 23 | 115-234 | 65 | 200 |
Physical Properties 20°
| Density g/cm³ | Specific Heat Capacity J/kg K | Thermal Conductivity W/m K | Electric Resistance Ω mm²/m |
|---|---|---|---|
| 7.7 | 480 | 15 | 0.8 |
Stainless steel comes in many grades offering different chemical compositions and mechanical properties. In general, stainless steels are classified into three main groups: austenitic, ferritic, martensitic, as well as duplex and precipitation hardened (PH) stainless steels. Each group includes various grades designed for specific applications and environmental conditions. Here is the answer to the question”How Many Grades of Stainless Steel?” and some common stainless steel grades and groups:
- Austenitic Stainless Steels: AISI 304 (1.4301), AISI 304L (1.4307), AISI 316 (1.4401), AISI 316L (1.4404)
- Ferritic Stainless Steels; AISI 430 (1.4016), AISI 409 (1.4512)
- Martensitic Stainless Steels: AISI 410 (1.4006), AISI 420 (1.4021)
- Duplex Stainless Steels: AISI 2205 (1.4462), AISI 2304 (1.4362)
- Precipitation Hardened (PH) Stainless Steels: 17-4 PH (1.4542), 15-5 PH (1.4545)
Stainless steel grades offer different properties depending on the alloying elements they contain and their heat treatment processes. Therefore, choosing the most suitable stainless steel grade for a particular application depends on factors such as the material’s durability, strength and corrosion resistance.
