Chemical Composition Element Specified / Typical Range (wt. %) C ≤0.07 / ≤0.030 Mn ≤2.00 Si ≤1.00 P ≤0.045 S ≤0.030 Cr 18.0–20.0 Ni 8.0–11.0 Mo — N ≤0.10 Fe Balance

Mechanical Properties Property Minimum / Requirement Tensile Strength, min. 515 MPa (304) / 485 MPa (304L) Yield Strength, 0.2%, min. 205 MPa (304) / 170 MPa (304L) Elongation, min. 30% Hardness As required by the applicable fitting specification

Chemical and petrochemical process piping Oil and gas transmission and production systems Power generation and utility piping Food, beverage and pharmaceutical systems Water treatment and desalination Marine and offshore piping

Chemical Composition Element Specified / Typical Range (wt. %) C ≤0.07 / ≤0.030 Mn ≤2.00 Si ≤1.00 P ≤0.045 S ≤0.030 Cr 18.0–20.0 Ni 8.0–11.0 Mo — N ≤0.10 Fe Balance

Mechanical Properties Property Minimum / Requirement Tensile Strength, min. 515 MPa (304) / 485 MPa (304L) Yield Strength, 0.2%, min. 205 MPa (304) / 170 MPa (304L) Elongation, min. 30% Hardness As required by the applicable fitting specification

Chemical and petrochemical process piping Oil and gas transmission and production systems Power generation and utility piping Food, beverage and pharmaceutical systems Water treatment and desalination Marine and offshore piping

304 / 304L Stainless Steel Elbow

Grade: 304/304L

Elbow types:

90° Long Radius, 90° Short Radius, 45° Elbow, 180° Return, 3D / 5D Elbow

Standards:

ASME B16.9, EN 10253-4:2025, JIS B2312/2313 etc.

304 and 304L are widely used austenitic stainless steels for general-purpose piping fittings. They offer good corrosion resistance, excellent weldability and formability, and reliable performance in many industrial, food, water and process services. 304 is the standard general-purpose grade, while 304L has reduced carbon content and is particularly suitable for welded fittings where reduced sensitization is desired.

Chemical Composition

Element	Specified / Typical Range (wt. %)
C	≤0.07 / ≤0.030
Mn	≤2.00
Si	≤1.00
P	≤0.045
S	≤0.030
Cr	18.0–20.0
Ni	8.0–11.0
Mo	—
N	≤0.10
Fe	Balance

Mechanical Properties

Property	Minimum / Requirement
Tensile Strength, min.	515 MPa (304) / 485 MPa (304L)
Yield Strength, 0.2%, min.	205 MPa (304) / 170 MPa (304L)
Elongation, min.	30%
Hardness	As required by the applicable fitting specification

Chemical and petrochemical process piping
Oil and gas transmission and production systems
Power generation and utility piping
Food, beverage and pharmaceutical systems
Water treatment and desalination
Marine and offshore piping

Introduction

Specification

Chemical Composition

Element	Specified / Typical Range (wt. %)
C	≤0.07 / ≤0.030
Mn	≤2.00
Si	≤1.00
P	≤0.045
S	≤0.030
Cr	18.0–20.0
Ni	8.0–11.0
Mo	—
N	≤0.10
Fe	Balance

Mechanical

Mechanical Properties

Property	Minimum / Requirement
Tensile Strength, min.	515 MPa (304) / 485 MPa (304L)
Yield Strength, 0.2%, min.	205 MPa (304) / 170 MPa (304L)
Elongation, min.	30%
Hardness	As required by the applicable fitting specification