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 16.0–18.0 Ni 10.0–14.0 Mo 2.0–3.0 N ≤0.10 Fe Balance

Mechanical Properties Property Minimum / Requirement Tensile Strength, min. 515 MPa (316) / 485 MPa (316L) Yield Strength, 0.2%, min. 205 MPa (316) / 170 MPa (316L) Elongation, min. 30% Hardness As required by the applicable fitting specification

Pump and equipment connections Process piping size transitions Chemical and petrochemical plants Oil and gas and energy systems Water treatment and desalination Food, pharmaceutical and general industrial 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 16.0–18.0 Ni 10.0–14.0 Mo 2.0–3.0 N ≤0.10 Fe Balance

Mechanical Properties Property Minimum / Requirement Tensile Strength, min. 515 MPa (316) / 485 MPa (316L) Yield Strength, 0.2%, min. 205 MPa (316) / 170 MPa (316L) Elongation, min. 30% Hardness As required by the applicable fitting specification

Pump and equipment connections Process piping size transitions Chemical and petrochemical plants Oil and gas and energy systems Water treatment and desalination Food, pharmaceutical and general industrial piping

316 / 316L Stainless Steel Reducers

Grade: 316/316L

Types:

Concentric Reducer, Eccentric Reducer, Straight Reducer, Seamless Reducer, Welded Reducer

Standard:

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

316 and 316L are molybdenum-bearing austenitic stainless steels with improved resistance to pitting and crevice corrosion compared with 304, especially in chloride-containing environments. 316L is the lower-carbon version and is commonly selected for welded piping systems. Stainless steel fittings made from these grades are widely used in chemical, pharmaceutical, marine, food-processing, water-treatment and other corrosive services.

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	16.0–18.0
Ni	10.0–14.0
Mo	2.0–3.0
N	≤0.10
Fe	Balance

Mechanical Properties

Property	Minimum / Requirement
Tensile Strength, min.	515 MPa (316) / 485 MPa (316L)
Yield Strength, 0.2%, min.	205 MPa (316) / 170 MPa (316L)
Elongation, min.	30%
Hardness	As required by the applicable fitting specification

Pump and equipment connections
Process piping size transitions
Chemical and petrochemical plants
Oil and gas and energy systems
Water treatment and desalination
Food, pharmaceutical and general industrial 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	16.0–18.0
Ni	10.0–14.0
Mo	2.0–3.0
N	≤0.10
Fe	Balance

Mechanical

Mechanical Properties

Property	Minimum / Requirement
Tensile Strength, min.	515 MPa (316) / 485 MPa (316L)
Yield Strength, 0.2%, min.	205 MPa (316) / 170 MPa (316L)
Elongation, min.	30%
Hardness	As required by the applicable fitting specification