ASTM A403 WP304-S 90 Degree LR Seamless Elbow for Industrial Field
Brief Introduction
ASTM A403 WP304-S 90 Degree LR (Long Radius) Seamless Elbow is a high-performance stainless steel pipe fitting, strictly manufactured in accordance with ASTM A403 / ASME SA403 and ASME B16.9 standards. It is made of WP304-S austenitic stainless steel (UNS S30400), featuring excellent corrosion resistance, superior weldability, high toughness and stable mechanical strength. As a seamless-formed pipe fitting with a 90-degree angle and long radius (R=1.5×nominal diameter), it is specially designed for changing pipeline direction, which minimizes fluid resistance, avoids medium accumulation, and ensures smooth and efficient conveying of media. It is widely used in various industrial and civil pipeline systems, serving as a reliable connection component for low to medium pressure, mild corrosive working conditions, and suitable for conveying water, gas, oil, chemical reagents and other media.
Chemical Composition Analysis (wt%)
| Alloy Grade |
C |
Cr |
Ni |
Mn |
Si |
P |
S |
| ASTM A403 WP304-S (UNS S30400) |
≤0.08 |
18.0-20.0 |
8.0-12.0 |
≤2.00 |
≤1.00 |
≤0.045 |
≤0.030 |
Typical Mechanical Properties
| Mechanical Property |
Standard Requirement (ASTM A403) |
Typical Value |
| Yield Strength (Rp0.2), MPa |
≥205 |
210-280 |
| Tensile Strength (Rm), MPa |
≥515 |
520-650 |
| Elongation (A), % |
≥40 |
42-50 |
| Hardness (HB), Brinell |
≤201 |
140-190 |
| Impact Toughness (KV), J (-20℃) |
≥60 |
70-100 |
Available Tests
| Test Type |
Standard |
| Chemical Composition Test (PMI) |
Spectrometer, ASTM A403 |
| Tensile & Impact Test |
ASTM E8/E8M, ASTM A370 |
| Hardness Test |
ASTM E10 |
| Hydrostatic/Pneumatic Pressure Test |
ASTM A403, ASME B16.9 |
| Non-Destructive Testing (NDT) |
UT, RT, MT, PT (ASTM E165), Eddy Current Test |
| Corrosion Resistance Test |
ASTM G48, Salt Spray Test (ASTM B117) |
