Home > Other Material > ASTM A 453 GR 660 Class A Fasteners
ASTM A453 Grade 660 Class A fastenersare high-performance fastening solutions recognized for outstanding strength and resistance to corrosion. These fasteners are produced from alloy steel with elevated nickel and chromium content to guarantee robust mechanical strength and durability in demanding environments. Engineered to comply with rigorous ASTM standards, ASTM A453 Grade 660 Class A fasteners find primary use in the oil and gas, petrochemical and aerospace sectors. Preferred for their dependability, they deliver safety and extended service life, making them indispensable for applications that demand high tensile strength and corrosion resistance.
| Grade | Stainless Steel ASTM A453 Gr.660 Class A/B/C/D |
| Specifications | ASTM A453, DIN 933, DIN 931, ANSI, JIS standards and all International Standards |
| Length | 3mm to 200mm |
| Size | M 02 to M 160, Custom Sizes |
| Form | Nuts, Bolts, Washers, Screw |
| Types | Bolts, Nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners etc |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 895 min |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 585 min |
| Elongation in 4D (El) | 15 |
| Reduction | 18 |
|
Element |
Content |
|---|---|
|
Carbon |
0.08 max |
|
Manganese |
2.00 max |
|
Phosphorus, max |
0.040 max |
|
Sulfur, max |
0.030 max |
|
Silicon |
1.00 max |
|
Nickel |
24.0-27.0 |
|
Chromium |
13.5-16.0 |
|
Molybdenum |
1.00-1.50 |
|
Tungsten |
– |
|
Titanium |
1.9-2.35 |
|
Aluminum |
0.35 max |
|
Vanadium |
0.10-0.50 |
|
Boron |
0.001-0.010 |
At Koasteel, we take pride in being the largest supplier and manufacturer in the New Zealand, delivering advanced solutions for every one of your piping requirements. With cutting-edge production facilities strategically situated in the New Zealand, we maintain an extensive inventory of more than 25,000 tons of top-quality materials kept ready in stock.
Reach out to us for a fast quote tailored to your requirement.
We provide these ASTM A 453 GR 660 Class A Fasteners in accordance with DIN, ISO, JIS or ANSI Standard.
ASTM A 453 GR 660 Class A Fasteners find uses that are as varied as the industries relying on them, led chiefly by the aerospace, railway, construction and automotive sectors along with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
ASTM A453 Grade 660 Class A fasteners typically hold up well against galvanic corrosion thanks to their alloy makeup, which contains corrosion-resistant elements such as nickel and chromium. That said, in settings where galvanic corrosion is likely, choosing the right materials and applying suitable surface treatments are advised to reduce risks and secure long-term durability. Consistent upkeep and compliance with industry standards further boost their resistance to galvanic corrosion.
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