Aluminum Alloy Hardness Chart: HW, HB, HV, HRB, HBA

The hardness of aluminum can be assessed through various testing methods, including Brinell hardness and Rockwell hardness. The hardness of aluminum alloys is related to the other metals they are alloyed with, such as magnesium, manganese, and copper. The addition of these elements can significantly enhance the corrosion resistance and hardness of aluminum.

Different series of aluminum alloys have different hardness values; for example, there are differences between the hardness of 7075 aluminum alloy and 6063 aluminum alloy. Furthermore, the hardness of aluminum alloys can also be measured with specific hardness testers, such as Vickers hardness testers, and the Rockwell hardness testing method.

This indicates that the hardness values of aluminum alloys can vary depending on different testing methods and standards. Simultaneously, the hardness of aluminum alloys can also be improved through surface treatment methods. For example, anodizing can significantly increase the hardness and wear resistance of aluminum alloys.

Aluminum Alloy Hardness Chart

The table below provides typical Vickers hardness values measured with a Tianxing W-20 Vickers hardness tester for nearly 400 different grades of aluminum alloy materials with different heat treatment processes.

The Vickers hardness values in the table are actual measured typical hardness values of various aluminum alloy materials and are not used as the basis for whether the material is qualified. The hardness qualification values for various materials should refer to the corresponding product technical specifications. For example, it is stipulated in the national standard GB 5237.1 “Aluminum Alloy Building Profiles Part 1: Base Material” that the Vickers hardness value of 6063-T5 should not be less than 8HW, and the Vickers hardness value of 6063A-T5 should not be less than 10HW.

The Brinell hardness, Vickers hardness, Rockwell hardness, and Barcol hardness are for reference only and cannot be used for conversion. If conversion is required, it is recommended to use the hardness conversion table of the American standard ASTM E140.

Aluminum Alloy Hardness Chart

NoAluminum Alloy GradeHWHBHVHRBHBA
1Alpase K100-S™ Plate11.46269
2Alpase K100™ Plate116068
3Alpase M-1™ Plate15951076079
4Weldural alloy, 100 mm17.41301497988
5Weldural alloy, 200 mm17.41301497988
6Weldural alloy, 300 mm17.41301497988
7Weldalite 049-T8117.21231407687
8Weldalite 049-Solution treatment17.41291477888
9Weldalite 049-T3181401628491
101050-H1403045
111050-H162.53551
121050-H186.34358
131060-H1202335
141060-H1402640
151060-H1603045
161060-H182.53551
171100-H1202842
181100-H1403247
191100-H164.23854
201100-H186.84459
211100-H19 Foil10.15566
221100-O02335
231145-H184.23954
241145-H19 Foil6.84559
251180-H1803045
261199-H1803146
271235-H19 Foil6.84559
281235-O Foil6.84559
291350-H1202640
301350-H1403045
311350-H161.33449
321350-H198.85063
331350-O02335
342011-T315951076079
352011-T315951076079
362011-T413.780904975
372011-T615.3971096180
382011-T815.31001126380
392011-T815.31001126380
402014-O6.84559
412014-T4; 2014-T45115.91051186782
422014-T6; 2014-T65117.81351558290
432017-O6.84559
442017-T4; 2017-T45115.91051186682
452018-T6116.91201377586
462024-O7.84761
472024-T316.91201377586
482024-T36117.41301498088
492024-T4; 2024-T35116.91201377586
502024-T617.21251427887
512024-T8117.41281467988
522024-T85117.41281467988
532024-T8617.81351558290
542025-T616.21101246983
552036-T415951076079
56204816.91221397686
572090-O10.65767
582090-T314.386975377
592090-T84181401628491
602091-T8x16.41151307184
612091-T8x, 0.1 Cold deformation16.91201377586
622117-T412.6708172
632124-T35116.91201377586
642124-T85117.41281467988
652218-T6116.41151267184
662218-T7115.91051186682
672218-T7215951076079
682219-O7.34660
692219-T3115.31001136380
702219-T35115.31001136380
712219-T3716.71171337385
722219-T6216.41151307284
732219-T8117.41301498088
742219-T85117.41301498088
752219-T8717.41301498088
762618-T6116.41151307284
773003-H122.53551
783003-H144.74055
793003-H167.84761
803003-H1810.15566
813003-H19 Foil12.2687671
823003-O02842
833004-H1913.7798975
843004-H329.25264
853004-H3411.4637369
863004-H3612.6708072
873004-H3813.3778774
883004-O6.84559
893005-H148.34962
903005-H1811.8657570
913005-O2.53551
923104-H1913.3788874
933105-H125.34156
943105-H147.34660
953105-H169.75365
963105-H1810.65867
973105-H258.34962
983105-O03146
994032-T616.91201377586
1004032-T65116.91201367586
1014032-T8616.91201367586
1024043-H147.34660
1034043-H169.75465
1044043-H1813.3778774
1054043-O4.23954
1065005-H124.23854
1075005-H146.34358
1085005-H168.34962
1095005-H189.75465
1105005-H323.13652
1115005-H345.34156
1125005-H367.34660
1135005-H3810.15566
1145005-O02842
1155042-H1915961086079
1165050-H327.34660
1175050-H349.75365
1185050-H3610.65867
1195050-H3811.4637369
1205050-O3.13652
1215052-H19 Foil14.388995477
1225052-H3211606868
1235052-H3412.2687871
1245052-H3612.9738373
1255052-H3813.3778774
1265052-O7.84761
1275056-H1815.91051186682
1285056-H191 Foil16.91201377586
1295056-H3815.31001126380
1305056-O11.8657570
1315082-H1915.91061206782
1325083-H11213.781915075
1335083-H116; 5083-H3211485965376
1345083-H32; 5083-H32314.387985477
1355083-H34; 5083-H34314.7931045878
1365083-O13.3778774
1375086-H11212.9738373
1385086-H116; 5086-H3213.3788874
1395086-H3414.387985477
1405086-O12.6708072
1415154-H11211.4637369
1425154-H3212.2677771
1435154-H3412.9738373
1445154-H3612.2677771
1455154-H3813.780904975
1465154-O10.65867
1475182-H1916.21121277083
1485182-H321485965376
1495182-H3414.7911025778
1505182-O12.9748473
1515252-H25; 5252-H3812.2687871
1525252-H2813.3758574
1535252-O7.34660
1545254-H11211.4637369
1555254-H3212.2677771
1565254-H3412.9738373
1575254-H3613.3788874
1585254-H3813.780904975
1595254-O10.65867
1605454-H111; 5454-H31112.6708072
1615454-H11211.46269
1625454-H3212.9738373
1635454-H3413.78175
1645454-O11.4627269
1655456-H11114.387985477
1665456-H1121483945176
1675456-H116; 5456-H32114.7901015678
1685456-H2414.7901015678
1695456-O1483945176
1705457-H258.34862
1715457-H28; 5457-H3810.15566
1725457-O03247
1735652-H3211607068
1745652-H3412.2687871
1755652-H3612.9738373
1765652-H3813.3778774
1775652-O7.84761
1785657-H254.74055
1795657-H28; 5657-H388.85063
1805657-O02842
1816005-T17.34660
1826005-T515951076079
1836009-T411.4627069
1846009-T614.7911025778
1856010-T413.3788874
1866013-T65117.41301498088
1876013-T8 0.3-1.9 cm17.41301498088
1886013-T8 1.9-3.8 cm17.41301498088
1896013-T8 3.8-8.2 cm17.41301498088
1906020-T65115951076079
1916020-T815.31001126380
1926020-T916.91201367586
1936053-O02640
1946053-T613.780904975
1956061-O03045
1966061-T4; 6061-T45111.8657570
1976061-T6; 6061-T65115951076079
1986061-T816.91201367586
1996061-T9115.91081236982
2006061-T91317.21231397687
2016063-O02538
2026063-T15.84257
2036063-T47.34660
2046063-T511607068
2056063-T612.9738373
2066063-T831482925076
2076063-T83112.6708072
2086063-T83215951076079
2096063-T83515.91051186682
2106066-O6.34358
2116066-T4; 6066-T45114.7901015678
2126066-T6; 6066-T65116.91201377586
2136070-O2.53551
2146070-T414.7901015678
2156070-T616.91201377586
2166101-H11102640
2176101-T612.6718172
2186151-T615.31001126380
2196201-T614.7901015678
2206201-T8114.388995577
2216205-T111.8657570
2226205-T515951076079
2236262-T612.6718172
2246262-T815.61031166581
2256262-T916.91201377586
2266351-T4; 6351-T45112.2677771
2276351-T5410.65867
2286351-T6; 6351-T65115951076079
2296463-O02538
2306463-T15.84257
2316463-T47.34660
2326463-T511606868
2336463-T612.9748473
2346951-O02842
2356951-T61482925076
2367001-O116068
2377005-O9.75365
2387005-T5315.91051186682
2397005-T6, 7005-T6315941065979
2407005-T635115941065979
2417005-W14.7931055078
2427016-T515961086079
2437021-T6216.21121277083
2447029-T516.41151287184
2457039-O11.4616969
2467039-T6117.21231407687
2477039-T6417.61331538189
2487049-T73; 7049-T735217.81351558290
2497050-T73511; 7050-T7351017.61321518089
2507050-T7451 (7050-T73651)181401628491
2517072-H1202842
2527072-H1403247
2537075-O11606868
2547075-T73; 7075-T735x17.81351558290
2557175-T735117.81351558290
2567175-T736;7175-T7365x18.21451698692
2577178-O11606868
2587475-T735117.81351558290
2597475-T761181401628491
2607475-T7651181401628491
2618001-H189.75465
2628001-O03045
2638081-H1129.75365
2648081-H256.84559
2658090-T314.7911025778
2668090-T511;+B35 8090-T651117.81371588390
2678090-T8116.71161377385
2688090-T815116.91211377586
2698090-T85217.41281467988
2708090-T8771; 8090-T651181381588391
2718090-T8x17.41301498088
2728280-H1811596768
2738280-O03146
274201.0-T6 Casting alloy17.81351558290
275201.0-T7 Sand casting17.21251537787
276201.0-T4 Sand casting15951076079
277204.0-T4 Die casting16.21101246983
278204.0-T4 Sand casting16.21101246983
279204.0-T6 Sand casting15.91051186682
280204.0-T6 Sand casting17.21251437787
281204.0-T6 Die casting15.91051186682
282204.0-T6 Die casting,17.21251437787
283208.0-T4 Die casting13.375854574
284208.0-T6 Die casting14.7901015678
285208.0-T7 Die casting13.780904975
286208.0-F Sand casting10.15566
287206.0-T7 Casting alloy16.91201377586
288A206.0-T7 Casting alloy16.91201377586
289222.0-O Sand casting13.780904975
290222.0-T551 Die casting16.41151307284
291222.0-T61 Sand casting16.41151307284
292222.0-T65 Die casting181401628491
293242.0-O Sand casting12.6708072
294242.0-T571 Die casting15.91051186682
295242.0-T571 Sand casting1485965376
296242.0-T61 Die casting16.21101246983
297242.0-T61 Sand casting15.91051186682
298242.0-T77 Sand casting13.3758574
299242.0-T21 Sand casting12.6708072
300295.0-T4 Sand casting11607068
301295.0-T6 Sand casting13.3758574
302295.0-T62 Sand casting15951076079
303295.0-T7 Sand casting12.6708072
304296.0-T6 Die casting14.7901015678
305296.0-T4 Casting alloy13.3758574
306296.0-T7 Casting alloy13.780904975
307308.0-F Die casting12.6708072
308319.0-F Die casting1485965376
309319.0-F Sand casting12.6708072
310319.0-T5 Sand casting13.780904975
311319.0-T6 Die casting14.7901015678
312319.0-T6 Sand casting13.780904975
313328.0-F Sand casting11607068
314328.0-T6 Sand casting13.780904975
315332.0-T5 Die casting15.91051186682
316333.0-F Die casting1483945176
317333.0-T5 Die casting14.388995577
318333.0-T6 Die casting15.31001136380
319333.0-T7 Die casting14.7901015678
320336.0-T551 Die casting15.91051186682
321336.0-T65 Die casting17.21251437787
322355.0-T51 Die casting13.3758574
323355.0-T51 Sand casting11.8657570
324355.0-T6 Die casting14.7901015678
325355.0-T6 Sand casting14.388995577
326355.0-T62 Die casting15.91051186682
327355.0-T7 Die casting1485965376
328355.0-T7 Sand casting1485965376
329355.0-T71 Die casting13.780904975
330355.0-T71 Sand casting13.3788874
331C355.0-T6 Sand casting14.7901015678
332C355.0-T61 Die casting14.7901015678
333356.0-F Die casting10.15566
334356.0-F Sand casting10.15566
335356.0-T51 Die casting12.6708072
336356.0-T51 Sand casting11607068
337356.0-T6 Die casting13.780904975
338356.0-T6 Sand casting12.9738373
339356.0-T7 Die casting13.3758574
340356.0-T7 Sand casting13.3758574
341356.0-T71 Die casting13.3758574
342356.0-T71 Sand casting11607068
343A356.0-T6 Sand casting14.388995577
344A356.0-T61 Die casting1485965376
345357.0-T6 Die casting14.7901015678
346A357.0-T61 Die casting15.31001136380
347359.0-T61 Die casting14.7901015678
348359.0-T62 Die casting15.31001136380
349383.0-F Die-casting alloy13.3758574
350384.0-F Die-casting alloy1485965376
351A384.0-F Die-casting alloy1485965376
352A390.0-F Sand casting15.31001136380
353A390.0-T6 Sand casting181401628491
354A390.0-T7 Sand casting16.41151307284
355A390.0-F, -T5 Die casting16.21101246983
356A390.0-T6 Die casting18.21451698692
357A390.0-T7 Die casting16.91201377586
358390.0-F Traditional die casting16.91201377586
359390.0-T5 Traditional die casting17.21251437787
360390.0-F Twin-plunger die casting16.21101246983
361390.0-T5 Twin-plunger die casting16.21101246983
362390.0-T7 Twin-plunger die casting17.21251437787
363443.0-F Die casting6.84559
364443.0-F Sand casting4.74055
365B443.0-F Die casting6.84559
366B443.0-F Sand casting4.74055
367512.0-F Sand casting8.85063
368513.0-F Die casting11607068
369514.0-F Sand casting8.85063
370518.0-F Die-casting alloy13.780904975
371520.0-T4 Sand casting13.3758574
372535.0-F or 535.0-T5,13.3758574
373A535.0-F or 535.0-T5,13.3758574
374B535.0-F or 535.0-T5,13.3758574
375705.0-F Sand casting11.8657570
376705.0-T5 Die casting12.6708072
377705.0-T5 Sand casting11.8657570
378707.0-T5 Sand casting1485965376
379707.0-T7 Die casting15951076079
380707.0-T7 Sand casting13.780904975
381710.0-T5 Sand casting13.3758574
382711.0-T1 Die casting12.6708072
383712.0-T5 Sand casting13.3758574
384712.0-F Sand casting13.3758574
385713.0-F Sand casting13.3758574
386713.0-T5 Die casting13.3758574
387713.0-T5 Sand casting13.3758574
388771.0-T5 Sand casting15.31001136380
389771.0-T51 Sand casting1485965376
390771.0-T52 Sand casting1485965376
391771.0-T6 Sand casting14.7901015678
392771.0-T71 Sand casting16.91201377586
393850.0-T5 Die casting6.84559
394850.0-T5 Sand casting6.84559
395851.0-T5 Die casting6.84559
396851.0-T5 Sand casting6.84559
397852.0-T5 Die casting12.6708072
398852.0-T5 Sand casting11607068

Which elements added to an aluminum alloy can most significantly enhance its hardness?

Elements such as magnesium, manganese, titanium, and rare earth elements (like lanthanum and yttrium) can be added to an aluminum alloy to enhance its hardness. Incorporating magnesium can notably increase the tensile strength of aluminum; for each 1% increase in magnesium, the tensile strength increases by approximately 34 MPa.

The introduction of manganese can supplement the strengthening effect and also decrease the susceptibility to thermal cracking.

Furthermore, the addition of rare earth elements (like lanthanum and yttrium) can enhance the resistance to the peeling of the oxidation layer. Hence, the incorporation of these elements can boost the hardness of aluminum alloys to varying degrees.

How can the hardness and wear resistance of aluminum alloys be improved through surface treatment methods?

There are several methods that can be employed to enhance the hardness and wear resistance of aluminum alloys through surface treatment:

Anodic oxidation treatment: This common method involves forming a dense oxide film on the surface of the aluminum alloy, thereby enhancing its hardness and corrosion resistance.

Surface electroplating: By coating a layer of metal (such as tin or copper) on the surface of the aluminum alloy, its hardness and wear resistance can be effectively improved.

Spraying wear-resistant coatings: A special wear-resistant coating is evenly sprayed on the surface of the aluminum alloy material to form a uniform, dense, and hard coating. This method not only improves wear resistance and corrosion resistance but also enhances the appearance.

Cold work hardening: This method hardens the aluminum alloy at room temperature through cold working, suitable for aluminum alloy materials that need to maintain their original shape.

Heat treatment: For certain specific types of aluminum alloys (like 6061), their strength and hardness can be enhanced through aging treatment. This usually involves an aging treatment after solution treatment.

Direct current magnetron sputtering deposition of amorphous CrAlN coating: This method deposits an amorphous CrAlN coating on the surface of the aluminum alloy, improving its corrosion resistance and wear resistance.

Thermal spraying and self-propagating high-temperature synthesis: These methods can prepare wear-resistant ceramic coatings on the surface of the aluminum alloy, significantly improving the wear resistance of the aluminum alloy.

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Shane
Author

Shane

Founder of MachineMFG

As the founder of MachineMFG, I have dedicated over a decade of my career to the metalworking industry. My extensive experience has allowed me to become an expert in the fields of sheet metal fabrication, machining, mechanical engineering, and machine tools for metals. I am constantly thinking, reading, and writing about these subjects, constantly striving to stay at the forefront of my field. Let my knowledge and expertise be an asset to your business.

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