Hemi Metals, located in Hamilton, New Zealand, is a reliable manufacturer and supplier of top-notch Alloy Steel F21 Bars and Rods, specifically designed for high-temperature and high-pressure industrial applications. This chromium-molybdenum alloy steel is celebrated for its impressive strength, resistance to oxidation, and consistent performance in thermal environments. Crafted with precision, these bars and rods undergo strict dimensional checks, controlled heat treatment, and thorough inspections to guarantee long-lasting mechanical reliability. Hemi Metals proudly supplies Alloy Steel F21 products to industries like power generation, refining, petrochemicals, and heavy engineering, where dependable performance under heat and pressure is crucial.
Alloy Steel F21 typically consists of about 2–3% chromium and 0.9–1.1% molybdenum, along with carefully controlled levels of carbon, manganese, and silicon. This well-balanced chemical makeup ensures good oxidation resistance, robust high-temperature strength, and reliable creep performance. F21 bars and rods usually provide tensile strength ranging from 515 to 690 MPa and yield strength between 310 and 415 MPa, all while maintaining good ductility and impact toughness. The alloy remains mechanically stable even when exposed to high temperatures and significant internal pressures for extended periods.
type | Alloy Steel ASTM A182 F21 Round Bars | |
Type | rod, square bar, Round bar, hexagon bar, flat bar, channel bar, angle bar, threaded bar | |
Standards | Alloy Steel ASTM A182 F22 , A479, A314, GB4226-84, GB/T1220-2007, JISG4311-91, JIS G4318-98, EN 10095-99, GB4226-84, EN10088-3-2005, JIS G3033-2005, etc | |
Surface | bright round bar, pickled round bar, black round bar | |
Package Details | Standard seaworthy package(wooden boxes package,pvc package, or other package) | |
Technique | Forged/Hot Rolled/Cold Drawn/Peeled | |
Range | Range – 3.17mm to 350mm dia | |
Diameter |
| |
Length | 1m-9m or according to the customer’s requirement |
| Grade | C | Mn | Si | Mo | P | Cr |
| ASTM A182 F21 | 0.05 – 0.15 | 0.30 – 0.60 | 0.50 max | 0.87 – 1.13 | 0.040 | 2.00 – 2.50 |
| Tensile Strength (ksi) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (ksi) min |
| 570 | 23 | 295 |
| STANDARD | WERKSTOFF NR. | UNS |
| ASTM A182 F21 | 1.7380 | K21590 |
|
SIZE IN INCHES |
ROUND |
SQUARE |
OCTAGON |
HEXAGON |
SIZE IN INCHES |
ROUND |
SQUARE |
OCTAGON |
HEXAGON |
|
1/16 |
.010 |
.013 |
.011 |
.012 |
11/16 |
1.262 |
1.607 |
1.333 |
1.392 |
|
5/64 |
.017 |
.022 |
.018 |
.019 |
45/64 |
1.320 |
1.681 |
1.394 |
1.456 |
|
3/32 |
.023 |
.029 |
.024 |
.025 |
23/32 |
1.380 |
1.756 |
1.487 |
1.521 |
|
7/64 |
.031 |
.039 |
.033 |
.034 |
47/64 |
1.440 |
1.834 |
1.521 |
1.588 |
|
1/8 |
.042 |
.053 |
.044 |
.046 |
3/4 |
1.502 |
1.913 |
1.586 |
1.656 |
|
9/64 |
.053 |
.067 |
.056 |
.058 |
25/32 |
1.630 |
2.075 |
1.721 |
1.797 |
|
5/32 |
.065 |
.083 |
.069 |
.072 |
13/16 |
1.763 |
2.245 |
1.862 |
1.944 |
|
11/64 |
.079 |
.100 |
.083 |
.087 |
27/32 |
1.901 |
2.421 |
2.008 |
2.096 |
|
3/16 |
.094 |
.120 |
.099 |
.104 |
7/8 |
2.045 |
2.603 |
2.159 |
2.254 |
|
13/64 |
.110 |
.140 |
.116 |
.121 |
29/32 |
2.193 |
2.792 |
2.316 |
2.418 |
|
7/32 |
.128 |
.163 |
.135 |
.141 |
15/16 |
2.347 |
2.988 |
2.479 |
2.588 |
|
15/64 |
.147 |
.187 |
.155 |
.162 |
31/32 |
2.506 |
3.191 |
2.646 |
2.763 |
|
1/4 |
.167 |
.213 |
.176 |
.184 |
1 |
2.670 |
3.400 |
2.820 |
2.945 |
|
17/64 |
.188 |
.240 |
.199 |
.207 |
1-1/16 |
3.015 |
3.838 |
3.183 |
3.324 |
|
9/32 |
.211 |
.269 |
.223 |
.233 |
1-1/8 |
3.380 |
4.303 |
3.569 |
3.727 |
|
19/64 |
.235 |
.300 |
.248 |
.259 |
1-3/16 |
3.766 |
4.795 |
3.977 |
4.152 |
|
5/16 |
.261 |
.332 |
.275 |
.288 |
1-1/4 |
4.172 |
5.313 |
4.407 |
4.601 |
|
21/64 |
.288 |
.360 |
.304 |
.318 |
1-5/16 |
4.600 |
5.857 |
4.858 |
5.072 |
|
11/32 |
.316 |
.402 |
.334 |
.348 |
1-3/8 |
5.049 |
6.428 |
5.332 |
5.567 |
|
23/64 |
.345 |
.439 |
.364 |
.381 |
1-7/16 |
5.518 |
7.026 |
5.827 |
6.085 |
|
3/8 |
.376 |
.478 |
.397 |
.414 |
1-1/2 |
6.008 |
7.650 |
6.345 |
6.625 |
|
25/64 |
.408 |
.519 |
.431 |
.450 |
1-9/16 |
6.519 |
8.301 |
6.885 |
7.189 |
|
13/32 |
.441 |
.561 |
.466 |
.486 |
1-5/8 |
7.051 |
8.978 |
7.446 |
7.775 |
|
27/64 |
.475 |
.605 |
.502 |
.524 |
1-11/16 |
7.604 |
9.682 |
8.030 |
8.385 |
|
7/16 |
.511 |
.651 |
.540 |
.564 |
1-3/4 |
8.178 |
10.41 |
8.634 |
9.018 |
|
29/64 |
.548 |
.698 |
.579 |
.604 |
1-13/16 |
8.773 |
11.17 |
9.265 |
9.673 |
|
15/32 |
.587 |
.747 |
.620 |
.647 |
1-7/8 |
9.388 |
11.95 |
9.911 |
10.35 |
|
31/64 |
.627 |
.798 |
.662 |
.692 |
1-15/16 |
10.02 |
12.76 |
10.58 |
11.05 |
|
1/2 |
.668 |
.850 |
.705 |
.736 |
2 |
10.68 |
13.60 |
11.28 |
11.78 |
|
33/64 |
.710 |
.904 |
.750 |
.783 |
2-1/16 |
11.36 |
14.46 |
11.99 |
12.53 |
|
17/32 |
.754 |
.960 |
.796 |
.831 |
2-1/8 |
12.06 |
15.35 |
12.73 |
13.30 |
|
35/64 |
.799 |
1.017 |
.844 |
.881 |
2-3/16 |
12.78 |
16.27 |
13.49 |
14.09 |
|
9/16 |
.845 |
1.076 |
.892 |
.932 |
2-1/4 |
13.52 |
17.21 |
14.27 |
14.91 |
|
37/64 |
.893 |
1.136 |
.943 |
.985 |
2-5/16 |
14.28 |
18.18 |
15.08 |
15.75 |
|
19/32 |
.941 |
1.199 |
.994 |
1.038 |
2-3/8 |
15.06 |
19.18 |
15.91 |
16.61 |
|
39/64 |
.992 |
1.263 |
1.048 |
1.094 |
2-7/16 |
15.87 |
20.20 |
16.75 |
17.49 |
|
5/8 |
1.043 |
1.328 |
1.102 |
1.150 |
2-1/2 |
16.69 |
21.25 |
17.62 |
18.40 |
|
41/64 |
1.096 |
1.395 |
1.207 |
1.209 |
2-9/16 |
17.53 |
22.33 |
18.52 |
19.34 |
|
21/32 |
1.150 |
1.464 |
1.214 |
1.268 |
2-5/8 |
18.40 |
23.43 |
19.43 |
20.29 |
|
43/64 |
1.205 |
1.535 |
1.272 |
1.329 |
2-11/16 |
19.29 |
24.56 |
20.37 |
21.27 |
Alloy Steel F21 is primarily used in applications requiring high strength, heat resistance, and corrosion resistance. It's ideal for use in power generation, refinery systems, chemical processing plants, and boilers.
Alloy Steel F21 bars and rods are known for their excellent strength, high-temperature resistance, and durability. They offer superior mechanical properties for critical applications in demanding environments.
Alloy Steel F21 Bars and Rods find extensive use in environments that demand high strength, thermal stability, and long-term reliability under high temperatures and pressures. They are commonly utilized in boiler components, steam piping systems, heat exchangers, pressure vessel parts, flanges, valves, and high-temperature fasteners. In power plants and petrochemical refineries, F21 bars and rods serve as structural supports, high-stress mechanical assemblies, and essential piping hardware. Additionally, they are employed in thermal processing equipment, industrial heaters, and refinery furnace systems, thanks to their reliable creep resistance and durability.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hemi Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hamilton New Zealand
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