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| Brand Name : | Pride | 
| Model Number : | D/DC | 
| Price : | Negotiate | 
| Payment Terms : | T/T, Western Union, MoneyGram,Paypal,Payonner | 
| Supply Ability : | 100pcs | 
| Delivery Time : | 20-25 days | 
Impact Devices For Hardness Tester
Impact device D: Universal device for most hardness requirements
Impact device DC: Ultra-short version; manually loaded on the front; same characteristics as type D; for testing in boreholes,built-in parts, hollow cylindrical parts, etc.; max. 940 HV
Impact device DL: With extremely long and fine front piece only for steel and cast steel; for testing in narrow or hard to reach areas; max. 950 HV
Impact device D+15: The front part is narrow and the coil is located behind it; same characteristics as type D; only for steel;for hardness testing in slots, grooves, recessed areas, gear flanks,grooves, cavities, tooth flanks, etc.; max. 940 HV
Impact device C: Reduced impact energy of about 1/4 of type D; for tempered or surface treated steel, small or sensitive-to-shock parts (minimal imprint is left); max. 1000 HV
Impact device G: With large test-tip diameter; impact energy 9 times larger than type D; on steel, gray or nodular cast iron; for large cast parts and forgings or parts with high surface roughness;max. 650 HB (only in Brinell)
Impact device E: With a synthetic diamond test tip of approx.5000 HV; for very hard materials (above 50 HRC / 650 HV) such as carbide, barrels, etc.; max. 1200 HV
| Material | Method | Impact device | |||||
| D/DC | D+15 | C | G | E | DL | ||
| Steel and cast steel | HRC | 20~68.5 | 19.3~67.9 | 20.0~69.5 | 22.4~70.7 | 20.6~68.2 | |
| HRB | 38.4~99.6 | 47.7~99.9 | 37.0~99.9 | ||||
| HRA | 59.1~85.8 | 61.7~88.0 | |||||
| HB | 127~651 | 80~638 | 80~683 | 90~646 | 83~663 | 81~646 | |
| HV | 83~976 | 80~937 | 80~996 | 84~1042 | 80~950 | ||
| HS | 32.2~99.5 | 33.3~99.3 | 31.8~102.1 | 35.8~102.6 | 30.6~96.8 | ||
| Cold work tool steel | HRC | 20.4~67.1 | 19.8~68.2 | 20.7~68.2 | 22.6~70.2 | ||
| HV | 80~898 | 80~935 | 100~941 | 82~1009 | |||
| Stainless steel | HRB | 46.5~101.7 | |||||
| HB | 85~655 | ||||||
| HV | 85~802 | ||||||
| Grey cast iron | HRC | ||||||
| HB | 93~334 | 92~326 | |||||
| HV | |||||||
| Nodular cast iron | HRC | ||||||
| HB | 131~387 | 127~364 | |||||
| HV | |||||||
| Cast aluminium alloys | HB | 19~164 | 23~210 | 32~168 | |||
| HRB | 23.8~84.6 | 22.7~85.0 | 23.8~85.5 | ||||
| BRASS(copper-zinc alloys) | HB | 40~173 | |||||
| HRB | 13.5~95.3 | ||||||
| BRONZE(copper-aluminium/tin alloys) | HB | 60~290 | |||||
| Wrought copper alloys | HB | 45~315 | |||||
| Available type of impact device | DC: Test hole or hollow cylindrical | D+15: Test groove or reentrant surface | C:Test small, light, thin parts and surface of hardened layer | G:Test large, thick, heavy and rough surface steel | E: Test super high hardness material | DL: Test slender narrow groove or hole | |
| Type of impact device | DC(D)/DL | D+15 | C | G | E | 
| Impacting energy Mass of impact body | 11mJ 5.5g/7.2g | 11mJ 7.8g | 2.7mJ 3.0g | 90mJ 20.0g | 11mJ 5.5g | 
| Test tip hardness: Dia. Test tip: Material of test tip: | 1600HV 3mm Tungsten carbide | 1600HV 3mm Tungsten carbide | 1600HV 3mm Tungsten carbide | 1600HV 5mm Tungsten carbide | 5000HV 3mm synthetic diamond | 
| Impact device diameter: Impact device length: Impact device weight: | 20mm 86(147)/ 75mm 50g | 20mm 162mm 80g | 20mm 141mm 75g | 30mm 254mm 250g | 20mm 155mm 80g | 
| Max. hardness of sample | 940HV | 940HV | 1000HV | 650HB | 1200HV | 
| Mean roughness value of sample surface Ra: | 1.6μm | 1.6μm | 0.4μm | 6.3μm | 1.6μm | 
| Min. weight of sample: Measure directly Need support firmly Need coupling tightly | >5kg 2~5kg 0.05~2kg | >5kg 2~5kg 0.05~2kg | >1.5kg 0.5~1.5kg 0.02~0.5kg | >15kg 5~15kg 0.5~5kg | >5kg 2~5kg 0.05~2kg | 
| Min. thickness of sample Coupling tightly Min. layer thickness for surface hardening | 5mm ≥0.8mm | 5mm ≥0.8mm | 1mm ≥0.2mm | 10mm ≥1.2mm | 5mm ≥0.8mm | 
| Size of tip indentation: | ||||||
| Hardness 300HV | Indentation diameter Depth of indentation | 0.54mm 24μm | 0.54mm 24μm | 0.38mm 12μm | 1.03mm 53μm | 0.54mm 24μm | 
| Hardness 600HV | Indentation diameter Depth of indentation | 0.54mm 17μm | 0.54mm 17μm | 0.32mm 8μm | 0.90mm 41μm | 0.54mm 17μm | 
| Hardness 800HV | Indentation diameter Depth of indentation | 0.35mm 10μm | 0.35mm 10μm | 0.35mm 7μm | -- -- | 0.35mm 10μm | 
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| Company Info. | 
| Shenzhen Pride Instrument Inc. | 
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