ASTM A453 Grade 651 Class A Bolts, Stud Bolts, Nuts & Washers

ASTM A453/A453M Grade 651 Class A Stainless Steel Bolting for High Temperature Applications

We offer precisely made Stud Bolts, Hex Bolts, Heavy Hex Bolts, Socket Head Cap Screws, Threaded Rods, Nuts & Washers as per ASTM A453 Grade 651 Class A. We produce these Grade 651 Class A Bolts from 3/8" to 4" in imperial and upto M100 in metric sizes. Larger size bolts can be made to order as per request. We also undertake custom made boltings in A453 as per drawing. We stock premium and surplus bar stock in Grade 651 (UNS S63198) for quick manufacturing and shorter delivery periods. These ASTM A453 Grade 651 Class A Bolts are supplied with EN 10204 Type 3.1 MTC. We offer Rupture Test Facility for sufficient quantity order.

ASTM A453 Grade 651 Class A Chemical Composition

Element
Content %
Grade 651 UNS S63198
Carbon 0.28 - 0.35
Manganese 0.75 - 1.50
Phosphorus 0.04 max
Sulfur 0.30 max
Silicon 0.30 - 0.80
Nickel 8.00 - 11.00
Chromium 18.00 - 21.00
Molybdenum 1.00 - 1.75
Tungsten 1.00 - 1.75
Titanium 0.10 - 0.35
Columbium* 0.25 - 0.60
Copper 0.50 max

* Or Columbium plus Tantalum

ASTM A453 Grade 651 Class A Mechanical Properties

Grade Class Tensile Strength Yield Strength Elongation
in 4D, min, %
Reduction
of Area, min, %
Brinell
Hardness
Number
Approximate
Rockwell
Hardness, B & C
Ksi Mpa Ksi Mpa min max
Grade 651 A 100 690 70A
60B
485
415
18 35 217-277 95 HRB 29 HRC

ASTM A453 Grade 651 Class A Heat Treatment Requirement

Grade Class Solution Treatment Hardening Treatment
Grade 651 A Hot-cold worked at 1200°F [650°C] min with 15% reduction in cross sectional area,
stress relief anneal at 1200°F [650°C] min or 4 hr, min

ASTM A453 Grade 651 Class A Stress Rupture Requirement

Grade Class Test Temperature Stress, Min Time to Rupture, min, hA Elongation, min, %
°F °C Ksi Mpa
Grade 651 A 1200 650 40 275 100 5

Note : The combination bar specimen shall be tested continuously at the temperature and at the minimum stress specified or at a greater stress and shall rupture in a time not less than than specified.

ASTM A453 Grade 651 Class A Marking Requirement

Grade Class A
Grade 651 FB 651A