Duplex Stainless Steel Manufacturer
Kalpataru Piping Solutions is a leading duplex stainless steel manufacturer & supplier of high-quality duplex stainless steel products. Duplex steel grades consist of a unique two phase microstructure of ferrite and austenite stainless steel that offers great strength, durability, and corrosion resistance.
With a higher chromium content, duplex stainless steel offers excellent resistance to stress corrosion cracking, pitting, and crevice corrosion, making it ideal for harsh industrial and marine environments. Compared with other ferritic grades, it has better toughness and ductility to ensure reliability in industrial applications. Our duplex steel products have good weldability, allowing welding without preheating while maintaining high corrosion resistance and mechanical strength. Common duplex steel grades such as 2205 (S32205) and 2507 (S32750) are manufactured to specifically be used in industrial applications as per their composition materials. We supply duplex stainless steel products to international countries mainly to South Africa, USA & European countries.
Types of Duplex Stainless Steel
We offer various types of duplex stainless steel products including duplex steel bars, duplex steel pipe, duplex steel plates & sheets etc. As a leading duplex stainless steel supplier offering duplex steel material grades with ASTM & ASME standard specifications with high quality.
Duplex Stainless Steel Specification
| Duplex SS Material Grade | UNS | Duplex Industry Specifications |
| Duplex 2205 22Cr |
UNS S31803 | ASME SA-182 (F51), SA-240, SA-798, SA-790, SA-815 ASTM A182 (F51),A240, A276, A479, A789, A790, A815, A928, A988 SAE J405 |
| Duplex 2205 22Cr |
UNS S32205 | ASME SA-182 (F60), SA-240, SA-798, SA-790, SA-815 ASTM A182 (F60), A240, A276, A479, A480, A798, A790, A815, A928, A988 SAE J405 |
| Duplex 2507 | UNS S32750 | ASTM A182 F53, A240, A276, A479, A789, A790, A815, A928, A988 SAE J405 |
| UNS S32760 | ASTM A182 F55, A240, A276, A314, A473, A479, A789, A790, A815, A928, A988 SAE J405 |
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| International identifiers | ASTM A182F51, SUS329J3L, STS329J3LTP, S31803, SS2377, AISI 318 LN, Z3CND22-05Az | |
Duplex Steel Material Properties
| Grade | Tensile Strength ksi (min) |
Yield Strength 0.2% ksi (min) |
Elongation % | Hardness (HB) MAX | Hardness (Rockwell B) MAX Impact Energy, ft.-lbs. | |
| Duplex 2205 | 90 | 65 | 25 | 217 | ||
| Duplex 2304 | 87 (600) |
58 (400) |
25 | 293 | 31j | |
| Duplex 2507 | 116 min. | 80 min. | 15 min. | 32 max. | 74 min. | |
| LDX 2101 | 94 ksi | 65 ksi | 30 | 290 (max) | ||
| Zeron 100 | 109 | 80 | 25 | 28 HRC | ||
FAQs
Which materials are used in duplex stainless steel manufacturing?
Duplex stainless steel is made up with chemicals 21-25% chromium, 2-3% molybdenum, and 0.15% nitrogen.
What are the benefits of duplex steel?
Duplex stainless steel materials are more cost effective as compared to other materials.
They offer high strength and excellent corrosion resistance.
What is the difference between duplex & super duplex steel?
The major difference between these two materials is the usage of a percentage of chromium in the manufacturing process. Higher chromium content (25%) & lower chromium content (22%) used in super duplex stainless steel & duplex steel respectively.
Is duplex harder than stainless steel?
Yes, duplex stainless steel is much harder & stronger than the stainless steel materials as they consist of a combination of both austenite & ferrite.
What is the density of duplex stainless steel?
Duplex steel density typically ranges from 7.7 to 8.0 grams per cubic centimeter (g/cm³). Density can vary by depending on the grade type & alloy material used in duplex stainless steel.
