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Main Standards of Steel Balls
In order to meet the needs of international customers, we can manufacture steel balls regulated by international standards or multinational standards,even by our customers’ enterprise standards.
 
Hardness Conversion Table DIN 50150

Tensile
Strength
(N/mm2)

Hardness
Vickers

Hardness
Brinell*

HRB

HRF

HRC

HRA

770

240

228

98.1

114.3

20.3

60.7

785

245

233

 

 

21.3

61.2

800

250

238

99.5

115.1

22.2

61.6

820

265

242

 

 

23.1

62.0

835

260

247

(101)

 

24.0

62.4

850

265

252

 

 

25.8

62.7

865

270

257

(102)

 

25.8

63.1

880

275

261

 

 

26.4

63.5

900

208

266

(104)

 

27.1

63.8

915

285

271

 

 

27.8

64.2

930

290

276

(105)

 

28.5

64.5

950

295

280

 

 

29.2

64.8

965

300

285

 

 

29.8

65.2

995

310

295

 

 

31.0

65.8

1030

320

304

 

 

32.2

66.4

1060

330

314

 

 

33.3

67.0

1095

340

323

 

 

34.4

67.6

1125

350

333

 

 

35.5

68.1

1155

360

342

 

 

36.6

68.7

1190

370

352

 

 

37.7

69.2

1220

380

361

 

 

38.8

69.8

1225

390

371

 

 

39.8

70.3

1290

400

380

 

 

40.8

70.8

1320

410

390

 

 

41.8

71.4

1350

420

399

 

 

42.7

71.8

1385

430

409

 

 

43.6

72.3

1420

440

418

 

 

44.5

72.8

1455

450

428

 

 

45.3

73.3

1485

460

437

 

 

46.1

73.6

1520

470

447

 

 

46.9

74.1

1555

480

(456)

 

 

47.7

74.5

1595

490

(466)

 

 

48.4

74.8

1630

500

(475)

 

 

49.1

75.3

1665

510

(485)

 

 

49.8

75.7

1700

520

(494)

 

 

50.5

76.1

1740

530

(504)

 

 

51.1

76.4

1775

540

(513)

 

 

51.7

76.7

1810

550

(523)

 

 

52.3

77.0

1845

560

(532)

 

 

53.0

77.4

1880

570

(542)

 

 

53.6

77.8

1920

580

(551)

 

 

54.1

78.0

1955

590

(561)

 

 

54.7

78.4

1995

600

(570)

 

 

55.2

78.6

2030

610

(580)

 

 

55.7

78.9

2070

620

(589)

 

 

56.3

79.2

2105

630

(599)

 

 

56.5

79.5

2145

640

(608)

 

 

57.3

79.8

2180

650

(618)

 

 

57.8

80.0

 

660

 

 

 

58.3

80.3

 

670

 

 

 

58.8

80.6

 

680

 

 

 

59.2

80.8

 

690

 

 

 

59.7

81.1

 

700

 

 

 

60.1

81.3

 

720

 

 

 

61.0

81.8

 

740

 

 

 

61.8

82.2

 

760

 

 

 

62.5

82.6

 

780

 

 

 

63.3

83.0

 

800

 

 

 

64.0

83.4

 

820

 

 

 

64.7

83.8

 

840

 

 

 

65.3

84.1

 

860

 

 

 

65.9

84.4

 

880

 

 

 

66.4

84.7

 

900

 

 

 

67.0

85.0

 

920

 

 

 

67.5

85.3

 

940

 

 

 

68.8

85.6

* calculate from HB = 0,95 x HV
* errechnet aus HB = 0,95 x HV
 
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