630 Stainless Steel Hexagon Bar

630 stainless steel hexagon bar, also known as 17-4 PH stainless steel, is a precipitation-hardening martensitic stainless steel designed for applications requiring high strength, hardness, and corrosion resistance. With its ability to be heat-treated to various strength levels, 630 stainless steel is widely used in aerospace, marine, chemical, and high-performance industrial applications.

Product Parameters

Specification	Details
Material Grade	630 (17-4 PH)
Standard Compliance	ASTM A564, ASME SA564, AMS 5643, DIN 1.4542, ISO 15510
Size Range	Across Flats: 8mm – 100mm
Length	1000mm – 6000mm (Customizable)
Surface Finish	Black, Bright, Polished, Peeled, Turned, Ground
Heat Treatment Conditions	H900, H1025, H1075, H1100, H1150, H1150M
Scope of Application	Aerospace, Marine, Chemical Processing, Energy, Automotive, Medical, Industrial Machinery

Chemical Composition

Element	Composition (%)
Chromium (Cr)	15.0 - 17.5
Nickel (Ni)	3.0 - 5.0
Copper (Cu)	3.0 - 5.0
Carbon (C)	≤ 0.07
Manganese (Mn)	≤ 1.00
Silicon (Si)	≤ 1.00
Phosphorus (P)	≤ 0.040
Sulfur (S)	≤ 0.030
Iron (Fe)	Balance

Physical Performance

• Density: 7.75 g/cm³
• Melting Point: 1400-1440°C
• Thermal Conductivity: 16.3 W/m·K (at 100°C)
• Electrical Resistivity: 0.80 μΩ·m (at 20°C)
• Magnetism: Magnetic in all conditions

Why Choose Sunning Steel for 630 Stainless Steel Hexagon Bars?

✅ Premium-Quality Standards – Manufactured to ASTM, ASME, AMS, DIN, ISO standards.
✅ Custom Processing Available – Cutting, polishing, and heat treatment options.
✅ Competitive Pricing – Best value for high-performance stainless steel.
✅ Global Supply Network – Fast and reliable worldwide shipping.
✅ Dedicated Customer Support – Expert advice and technical assistance.