How to Detect The Hardness of Stainless Steel Pipe
Stainless steel thickness greater than 1.2mm, with Rockwell hardness tester, testing, HRB, HRC hardness. 0.2 ~ 1.2mm thickness stainless steel capillary pipe plate surface Rockwell hardness test HRT, HRN hardness. Less than 0.2mm thick stainless steel plate surface Luo Hardness tester with diamond anvil, test HR30Tm hardness.
Metal materials in the United States, the standard in on the hardness test has a prominent feature is the precedence Rockwell hardness test, supplemented by Brinell hardness test, Vickers hardness test uses very little the U.S. believes Vickers hardness test primarily. The research for metal and thin small parts test. Chinese and Japanese standards are also used three types of hardness test, users can thickness and the material conditions of state and choose one of their own to test the stainless steel pipe material.
Japanese stainless steel capillary pipe on the tensile strength test and hardness test requirements and the corresponding Chinese standard forms the same value close to the Chinese standard reference here to see the traces by Japanese standards. Stainless steel hardness, the Rockwell hardness is a worthy priority to the use of equipment, simple equipment, easy to operate without professional inspector, the hardness value can be directly read, test efficiency,suitable for factory use.
On the use of Rockwell hardness testing hardness of stainless steel, stainless steel pipe standard generally provides for HRC and HRB two rulers. For the annealing stainless steel usually corresponds to each grade stainless steel varieties provides hardness values should not be HRB certain a large value, typically 88-96HRB range. As for the quenching and tempering of martensite stainless steel, generally corresponding to each grade stainless steel pipe variety, provides a hardness HRC is not smaller than a certain value, usually in the range of 32-46HRC Inside.
Provided only in stainless steel capillary pipe with Rockwell hardness of HRB and HRC scale. In fact, Rockwell superficial hardness testing stainless steel also can be fully applied. Because its principle is identical with the Rockwell hardness tester, test power is relatively lesser. And its hardness can be easily converted to HRB, HRC, or Brinell hardness HB, Vickers hardness HV. The corresponding conversion tables in the company’s website can be found in these conversion tables from the U.S. standard ASTM or international standards ISO. For thin-walled stainless steel pipe fine tube, thin stainless steel capillary pipe plate, thin stainless steel, fine stainless steel wire, surface hardness of Rockwell will be very convenient. In particular, developed the company’s latest portable surface Rockwell hardness, Rockwell hardness tester tube, can be as thin as 0.05mm stainless steel pipe Plate, stainless steel and fine to 4.8mm stainless steel capillary pipe tube for rapid, accurate hardness, making it difficult to resolve the past in the country’s problems immediately.
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According to ASME SA213/SA213M, ASTM A370, ASME SA789 / SA789M
Stainless Steel Mechanical Properties Stainless Steel Hardness Chart
| Grade | Tensile Strength min. ksi [MPa] | Yield Strength min. ksi [MPa] | Elongation in 2in or 50mm length % (min) | Hardness (Max) ASTM E18 Brinell | Hardness (Max) ASTM E18 Rockwell |
| 201 | 95 [655] | 38 [260] | 35 | 219 HBW | 95 HRB |
| 304 | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 304L | 70 [485] | 25 [170] | 35 | 192 HBW | 90 HRB |
| 304H | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 304N | 80 [550] | 35 [240] | 35 | 192 HBW | 90 HRB |
| 309S | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 309H | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 310S | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 310H | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 316 | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 316L | 70 [485] | 25 [170] | 35 | 192 HBW | 90 HRB |
| 316H | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 316Ti | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 317 | 75 [515] | 30 [205] | 34 | 192 HBW | 90 HRB |
| 317L | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 321 | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 321H | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| 347 | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| TP347H | 75 [515] | 30 [205] | 35 | 192 HBW | 90 HRB |
| N08904 | 71 [490] | 31 [215] | 35 | 192 HBW | 90 HRB |
| N08020 | 80 [550] | 35 [240] | 30 | 217 HBW | 95 HRB |
| 800 N08800 Cold Work | 75 [515] | 30 [205] | 30 | 192 HBW | 90 HRB |
| 800H N08810 | 65 [450] | 25 [170] | 30 | 192 HBW | 90 HRB |
| 800HT N08811 | 65 [450] | 25 [170] | 30 | 192 HBW | 90 HRB |
| N10276 | 100 [690] | 41 [283] | 40 | ||
| N06022 | 100 [690] | 45 [310] | 45 | ||
| S31803 | 90 [620] | 65 [450] | 25 | 290 HBW | 30 HRC |
| S31803 | 90 [620] | 65 [450] | 25 | 290 HBW | 30 HRC |
| S32101 | 101 [700] Wall≤0.187 in. [5.00 mm] | 77 [530] Wall≤0.187 in. [5.00 mm] | 30 | 290 HBW | 30 HRC |
| S32205 | 95 [655] | 70 [485] | 25 | 290 HBW | 30 HRC |
| S32550 | 110 [760] | 80 [550] | 15 | 297 HBW | 31 HRC |
| S32304 | 100 [690] OD 1 in. [25 mm] and Under 87 [600] OD over 1 in. [25 mm] | 65 [450] OD 1 in. [25 mm] and Under 58 [400] OD over 1 in. [25 mm] | 25 25 | … 290 HBW | … 30 HRC |
| S32750 | 116 [800] | 80 [550] | 15 | 300 HBW | 32 HRC |
| S32760 | 109 [750] | 80 [550] | 25 | 300 HBW | … |
1Mpa=144.55psi
Hardness | Hardness Testing | Hardness Test Methods | Brinell Hardness | Rockwell Hardness | Vickers Hardness | Superficial Rockwell Hardness | Shore Durometer Test | Hardness Conversion Table | Brinell Rockwell Hardness Conversion | Carbon Steel Cast Steel Hardness Conversion | Rockwell Superficial Brinell Vickers Shore Hardness Conversion | Harder Scales Equivalent | Softer Scales Equivalent | Figure Comparing Hardness Scales | Table of Components Showing Relevant Surface Hardness Values | O-Ring Installation Compressive Load vs Hardness Shore A Scale | Detect The Hardness Of Stainless Steel
