Alloy Bolts

S17400/630 Bolts

S17400/630 Bolts
Product Details

BDF can offer you good quality S17400/630 hex head bolts, S17400/630 socket head/allen bolts, S17400/630 hex cap screws, S17400/630 hex heavy bolts… in full thread or half thread. Our standards/specifications covers ASTM, ASME, DIN, ISO. Such as DIN933, DIN931, DIN912, ISO4014, ISO4017, ASME/AISI 18.2.1 etc. We can also manufacture all shapes of non-standard hastelloy bolts according to customers’ drawing. BDF is able to produce a wide range of sizes bolts by cold or hot forging. The diameter of bolts ranges from M6-M80 in Metric and 5/16” to 3 1/2” in Inch, and length can be up to 1000mm for bolts.


The 17-4PH alloy is a precipitated, hardened, martensitic stainless steel.

The 17-4PH alloy is a precipitated, hardened, martensitic stainless steel composed of copper and niobium/niobium.

This grade has high strength, hardness (up to 300º C/572º F) and corrosion resistance.

Mechanical properties:

1.Tensile strength σb (MPa): Aging at 480°C, 1310; Aging at 550°C, 1060; Aging at 580°C, 1000; Aging at 620°C, 930

2.Conditional yield strength σ0.2 (MPa): Aging at 480°C, 1180; Aging at 550°C, 1000; Aging at 580°C, 865; Aging at 620°C, 725

3.Elongation δ5 (%): Aging at 480°C, 10; Aging at 550°C, 12; Aging at 580°C, 13; Aging at 620°C, 16

4.Section shrinkage ψ (%): Aging at 480°C, 40; Aging at 550°C, 45; Aging at 580°C, 45; Aging at 620°C, 50

5.Hardness: Solid solution 363HB and 38HRC; 480°C aging, 375HB and 40HRC; 550°C aging, 331HB and 35HRC; 580°C aging, 302HB and 31HRC; 620°C aging, 277HB and 28HRC

6.Density: 7.80g/cm3

If our s17400/630 bolts caters to your requirement, welcome to contact our professional manufacturers and suppliers. Highly qualified products, competitive price and good after-sale service can be assured.