B16 Alloy Steel Bar - B5F5B - ASTM A 193
B16 alloy steel bar is a chromium, molybdenum, vanadium alloy steel widely used for high strength industrial applications. It is commonly used in power generation turbines in high strength fastener applications such as bolt material.
B-16 Alloy Steel Inventory Size Ranges
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Standard Inventory Specifications
- ASTM A193 Grade B16
(w/ supplement of S2 charpy impact test) - S6 stress relieving by AOD-ESR melt
- GE-B5F5
- EN 10204
- Hot worked, solution treated (annealed), then descaled
Common Trade Names
- B16 alloy
- B16 steel
- B16 bolt material
Common Applications of B-16 Alloy Steel
- Power generation
- Bolting
Chemical Composition
| Element | Percent by Weight | |
|---|---|---|
| C | Carbon | 0.42 - 0.50% |
| Cr | Chromium | 0.80 - 1.15% |
| Mn | Manganese | 0.45 - 0.70% |
| Mo | Molybdenum | 0.45 - 0.65% |
| P | Phosphorous | 0.025% max (bars) |
| V | Vanadium | 0.25 - 0.35% |
| S | Sulfur | 0.025% max (bars) |
| Al | Aluminum | 0.015% max |
| Si | Silicon | 0.20 - 0.35% |
Physical Properties of B16 Alloy Steel
| B16 alloy is typically hardened by oil quenching and tempering after the part has reached room temperature |
| In diameters over 7" water quenching may be used to meet Charpy impact properties |
| Density = 0.283 (lb/cu. In.) |
Mechanical Properties of B16 Alloy Steel
| Hardness | Generally, B16 alloy steel bar is supplied in the quenched and tempered condition where the hardness is normally Rc 35-43. In the annealed condition, hardness is typically 187 BHN. |
| Machinability | Generally supplied in the quenched and tempered condition, machinability is similar to standard AISI alloys such as 4340. |
*The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.