Tabella ASTM A 370

HVHRCHVHRCHVHRCHVHRCHVHRC
227085195081163377132373100469
21908418658015567612457294068
21108317877914787511607192067.5
20308217107814007410767090067
HRC
Diamond cone
HV
Diamond pyramid
HB
Sphere 10 mm
HRA
Diamond cone
Rm
N/mm2 MPa
HRB
Sphere 1/16’’
HV
Diamond pyramid
HB
Sphere 10 mm
HRA
Diamond cone
Rm
N/mm2 MPa
6894085.610024024061.5800
6790085.09923423460.9785
6686584.59822822860.2750
6583273983.99722222259.5715
6480072283.49621621658.9705
6377270682.89521021058.3690
6274668882.39420520557.6675
6172067081.89320020057.0650
6069765481.29219519556.4635
5967463480.724209119019055.8620
5865361580.123309018518555.2615
5763359579.622408918018054.6605
5661357779.021608817617654.0590
5559556078.520708717217253.4580
5457754378.020108616916952.8570
5356052577.419508516516552.3565
5254451276.818808416216251.7560
5152849676.318208315915951.1550
5051348275.917608215615650.6530
4949846875.217008115315350.0505
4848445574.716408015015049.5495
4747144274.115807914714748.9485
4645843273.615207814414448.4475
4544642173.114807714114147.9470
HRCHV
HB
HRA
RmHRBHV
HBHRARm
4443440972.514307613913947.3460
4342340072.013907513713746.8455
4241239071.513407413513546.3450
4140238170.913007313213245.8440
4039237170.412507213013045.3435
3938236269.912207112712744.8425
3837235369.411807012512544.3420
3736334468.911406912312343.8415
3635433668.411106812112143.3405
3534532767.910806711911942.8400
3433631967.410506611711742.3395
3332731166.810306511611641.8385
3231830166.310106411411441.4
3131029465.89706311211240.9
3030228665.39506211011040.4370
2929427964.69306110810840.0
2828627164.39006010710739.5
2727926463.88805910610639.0360
2627225863.38605810410438.6
2526625362.88505710310338.1350
2426024762.48205610110137.7
2325424362.08105510010037.2340
2224823761.57905436.8
2124323161.0770519435.5330
2023822660.5760499234.6320
HRCHV
HBHRA
RmHRBHV
HBHRARm

I valori in grassetto sono fuori tabella ASTM ma comunque attendibili.
I valori in corsivo sono dovuti al passaggio da tab.2 a tab.3 della norma ASTM A 370
Durezza Rockwell: HRC cono diamante 120° carico 1470 N (150 Kgf) durata 30’’
Durezza Rockwell: HRA cono diamante carico 588 N (60 Kgf) durata 30’’
Durezza Rockwell: HRB sfera 1/16’’ carico 980 N (100 Kgf) durata 30’’
Durezza Vickers: HV piramide diamante 136° Carico 294 N (30 Kgf) durata 15’’
Durezza Brinell: HB sfera 10 mm carico 29.400N (3000 Kgf) durata carico 15’’
Resistenza a trazione Tensile strength: Rm N/mm2 (Mpa)