ASTM A194 Gr 7 Washers

ASTM A194 Gr 7 Washers are high-strength fastener components manufactured from alloy steel designed to perform reliably in high temperature and high pressure conditions. These washers provide excellent hardness, stability, and tight load distribution, making them ideal for heavy bolting assemblies in petrochemical plants, power generation units, refining systems, and high-pressure piping networks. Zeron Fasteners supplies premium quality Grade 7 Washers that ensure secure fastening, corrosion resistance, and superior mechanical performance. These washers are commonly used with Grade 7 nuts and bolts to maintain joint integrity in critical industrial environments.

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ASTM A194 Gr 7 Washers Chemical Composition

Element Composition (%)
Carbon (C) 0.49 max
Manganese (Mn) 0.60 – 0.90
Phosphorus (P) 0.04 max
Sulfur (S) 0.05 max
Silicon (Si) 0.15 – 0.35
Chromium (Cr) 0.80 – 1.10
Molybdenum (Mo) 0.15 – 0.25

ASTM A194 Gr 7 Washers Mechanical Properties

Mechanical Property Value
Tensile Strength Min 860 MPa
Yield Strength Min 755 MPa
Hardness (HBW) 248 – 352
Elongation Min 20%

ASTM A194 Gr 7 Washers Feature Products