Stainless Steel Valve Balls 316/316L
Ball For Ball Valves
Raw Material Valve Ball Forging
Centrigugal Casting Valve Ball
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316 and 316L Valve Balls
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Overview
• Excellent Corrosion Resistance
• Good Elevated Temperature Strength
• Good Pitting Resistance
316 Stainless Steel is widely used in applications requiring corrosion resistance superior to Type 304, or good elevated temperature strength. Type 316L immunity to carbide precipitation due to welding assures optimum corrosion resistance.
Type 316L is an extra-low carbon version of Type 316 that eliminates harmful carbide precipitation due to welding.
Composition | Type 316 % | Type 316L % |
Carbon | 0.08 max. | 0.03 max. |
Manganese | 2.00 max. | 2.00 max. |
Phosphorus | 0.045 max. | 0.045 max. |
Sulfur | 0.030 max. | 0.03 max. |
Silicon | 0.75 max. | 0.75 max. |
Chromium | 16.00 – 18.00 | 16.00 – 18.00 |
Nickel | 10.00 – 14.00 | 10.00 – 14.00 |
Molybdenum | 2.00 – 3.00 | 2.00 – 3.00 |
Nitrogen | 0.10 max. | 0.10 max. |
Iron | Balance | Balance |
Typical Room Temperature Properties
| UTS | 0.2% YS | Elongation | Hardness |
Type 316 | 84.0 (579) | 42.0 (290) | 50 | B79 |
Type 316L | 81.0 (558) | 42.0 (290) | 50 | B79 |
Elevated Temperature Properties
Temperature °F (°C) | UTS ksi (MPa) | 0.2% YS ksi (MPa) | Elongation % in 2″ (50.8 mm) |
400 (204) | 81.0 (558) | 35.0 (241) | 51 |
600 (316) | 78.0 (538) | 31.0 (214) | 48 |
800 (427) | 76.0 (524) | 27.5 (190) | 47 |
1000 (538) | 70.0 (483) | 24.0 (165) | 44 |
1200 (649) | 57.0 (393) | 21.0 (145) | 40 |
1400 (760) | 35.0 (241) | 18.0 (124) | 37 |
1600 (871) | 24.0 (165) | 16.0 (110) | 44 |
Corrosion Resistance
Types 316 and 316L Stainless Steels exhibit better corrosion resistance than Type 304. They provide excellent resistance to pitting type corrosion such as encountered in a sea coast environment. They also provide good resistance to most chemicals involved in the paper, textile and photographic industries. They are particularly useful in one to five percent sulfuric acid solutions up to 150°F (66°C) as well as acetic, phosphoric, formic and tartaric acids, and in certain chloride, bromide and iodide solutions.
Oxidation Resistance
The maximum temperature to which Types 316 and 316L can be exposed continuously without appreciable scaling is about 1700°F (927°C). For intermittent exposure, the maximum exposure temperature is about 1600°F (871°C).
Heat Treatments
Types 316 and 316L are non-hardenable by heat treatment.
Annealing: Heat to 1900 – 2100°F (1038 – 1149°C), then rapidly quench.
Stainless Steel Valve Balls 316/316L
Size:1/2″~56″
Product Feature:
Material: F304, F316, CF8M, CF8, 1.4301 1.4008,4A …etc. by Forging and centrifugal casting
Roundness ≤0.03mm
Surface roughness=0.4μm
Outside diameter. 1/2″-4″ +-0.03 mm, 6″-12″+-0.05 mm (Outside diameter tolerance)
Inner diameter 1/2″-4″ 0~0.03mm,6″~12″ 0~0.05mm (Inner diameter tolerance)

Material | F304, F316, CF8M, CF8, 1.4301 1.4008,4A …etc. | ||||||
Dimension | 1/2″~56″ | ||||||
Processing of blank | Forging, centrifugal casting , coil welding | ||||||
Sample making time | Normally 5days | ||||||
Lead time | Normally within 30 days | ||||||
Package | Cartons if no special requests | ||||||
Types of ball | Floating ball , trunnion ball ,hollow ball, solid ball, Metal to Metal ball, T-port ball,V-port ball,Special ball,Blank ball | ||||||
Surface treatment | Polishing, nickel plating (ENP), chromium plating (ECR), tungsten carbide (TCC), chromium carbide (CCC), NI60, NI55 and surfacing nickel-based materials |
*Any other sizes available on request according to customer drawings!