304L stainless steel

It is a low-carbon variant of the widely used 304 stainless steel.

Descriptions

1. Chemical Composition

The chemical composition of 304L stainless steel is critical to its performance. Below is a detailed table of its chemical composition:

Element	Composition（%）
Carbon (C)	≤0.03
Manganese(Mn)	≤2.00
Silicon (Si)	≤1.00
Phosphorus (P)	≤0.045
Sulfur (S)	≤0.030
Chromium (Cr)	18.00-20.00
Nickel (Ni)	8.00-12.00
Iron (Fe)	Balance

2. Mechanical Properties

The mechanical properties of 304L stainless steel forgings are essential for determining their suitability for various applications. The following table provides detailed mechanical properties:

Property	Value
Tensile Strength	485 MPa (70,000 psi)
Yield Strength (0.2% offset)	170 MPa (25,000 psi)
Elongation in 50 mm	40%
Hardness (Brinell)	201 max
Modulus of Elasticity	193 GPa(28 x 10^6 psi)
Density	8.00 g/cm³(0.289 1b/in³)
Melting Range	1400-145°C(2552-2642°F)

3. Common Forging Product

Forged Flanges

Forged Fittings

Forged Bars

Forged Shafts

Forged Valve

4. Industry standards

ASTM A182/A182M: Standard specification for forged or rolled alloy and stainless steel pipe flanges, forged fittings, and valves and parts for high-temperature service.

ASTM A473: Standard specification for stainless steel forgings.

ASME SA182/SA182M: Similar to ASTM A182 but specifically for ASME Boiler and Pressure Vessel Code applications.

EN 10250-4: Open die steel forgings for general engineering purposes – Part 4: Stainless steels.