Mil Malzemeleri – API TRIM NO
| Trim No | Nominal Trim | Seat Surface Material Type | Typical Grade for Seat Surface Cast / Forged / Weld |
Seat Surface Hardness (HB) Minimum |
Stem/Backseat Material Type | Typical Grade for Stem/ Backseat | Stem Hardness (HB) | Backseat Hardness (HB) | Note(s) |
| 1 | F6 | 13Cr | ASTM A217 CA15 ASTM A182 F6a AWS A5.9 ER410 |
– | 13Cr | ASTM A276 T410 ASTM A276 T420 |
200 min 275 max |
250 min | Absolete |
| 2 | 304 | 18Cr-Ni | ASTM A351 CF8 ASTM A182 F304 AWS A5.9 ER308 |
– | 18Cr-8Ni | ASTM A276 T304 | – | – | |
| 3 | F310 | 25Cr-20Ni | ASTM A182 F310 AWS A5.9 ER310 |
– | 25Cr-20Ni | ASTM A276 T310 | – | – | |
| 4 | Hard F6 | Hardened 13 Cr | Nitriding, min. thickness 0.13 mm | 750 | 13Cr | ASTM A276 T410 ASTM A276 T420 |
200 min 275 max |
250 min | |
| 5 | F6 Dual Hardfaced |
Co-Cr A | AWS A5.13 ECoCr-A/A5.21 ERCoCr-A | 350 | 13Cr | ASTM A276 T410 ASTM A276 T420 |
200 min 275 max |
250 min | |
| 5A | F6 Dual Hardfaced |
Ni-Cr | Maximum 25% Fe | 350 | 13Cr | ASTM A276 T410 ASTM A276 T420 |
200 min 275 max |
250 min | |
| 5B | F6 Dual Hardfaced |
R31233 | – | 350 | 13Cr | ASTM B815 ASTM B818 | – | – | |
| 6 | F6 Cu-Ni |
13Cr | ASTM A217 CA15 ASTM A182 F6a AWS A5.9 ER410 |
250 | 13Cr | ASTM A276 T410 ASTM A276 T420 |
200 min 275 max |
250 min | |
| Cu-Ni | min 30% Ni | 175 | |||||||
| 7 | F6 Hard F6 |
13Cr | ASTM A217 CA15 ASTM A182 F6 aAWS A5.9 ER410 |
250 | 13Cr | ASTM A276 T410 ASTM A276 T420 |
200 min 275 max |
250 min | |
| Hard 13Cr | Nitriding, min. thickness 0.13 mm | 750 | |||||||
| 8 | F6 Hardfaced |
13Cr | ASTM A217 CA15 ASTM A182 F6a AWS A5.9 ER410 |
250 | 13Cr | ASTM A276 T410 ASTM A276 T420 |
200 min 275 max |
250 min | |
| Co-Cr A | AWS A5.13 ECoCr-A/A5.21 ERCoCr-A | 350 | |||||||
| 8A | F6 Hardfaced |
13Cr | ASTM A217 CA15 ASTM A182 F6a AWS A5.9 ER410 |
250 | 13Cr | ASTM A276 T410 ASTM A276 T420 |
200 min 275 max |
250 min | |
| Ni-Cr | Max 25% Iron | 350 | |||||||
| 9 | Monel | Ni-Cu Alloy | as per Manufacturer’s Standard | – | Ni-Cu Alloy | as per Manufacturer’s Standard | – | – | |
| 10 | 316 | 18Cr-8Ni | ASTM A351 CF8M ASTM A182 F316 AWS A5.9 ER316 |
– | 18Cr-8Ni-Mo | ASTM A276 T316 | – | – | |
| 11 | Monel Hardfaced | Ni-Cu Alloy | as per Manufacturer’s Standard | – | Ni-Cu Alloy | as per Manufacturer’s Standard | – | – | |
| Co-Cr Ad or Ni-Cr | Refer to Trim 5/5A | 350 | |||||||
| 12 | 316 Hardfaced |
18Cr-8Ni-Mo | ASTM A351 CF8M ASTM A182 F316 AWS A5.9 ER316 |
– | 18Cr-8Ni-Mo | ASTM A276 T316 | – | – | |
| Co-Cr Ad or Ni-Cr | Refer to Trim 5/5A | 350 | |||||||
| 13 | Alloy 20 | 19Cr-29Ni | ASTM A351 CN7M ASTM B473 AWS A5.9 ER320 |
– | 19Cr-29Ni | ASTM B473 | – | – | |
| 14 | Alloy 20 Hardfaced | 19Cr-29Ni | ASTM A351 CN7M ASTM B473 AWS A5.9 ER320 |
– | 19Cr-29Ni | ASTM B473 | – | – | |
| Trim 5 or 5A | Refer to Trim 5 or 5A | 350 | |||||||
| 15 | 304 Dual Hardfaced |
Co-Cr A | AWS A5.13 ECoCr-A/A5.21 ERCoCr-A | 350 | 18Cr-8Ni | ASTM A276 T304 | – | – | |
| 16 | 316 Dual Hardfaced |
Co-Cr A | AWS A5.13 ECoCr-A/A5.21 ERCoCr-A | 350 | 18Cr-8Ni-Mo | ASTM A276 T316 | – | – | |
| 17 | 347 Dual Hardfaced |
Co-Cr A | AWS A5.13 ECoCr-A/A5.21 ERCoCr-A | 350 | 18Cr-10Ni-Cb | ASTM A276 T347 | – | – | |
| 18 | Alloy 20 Dual Hardfaced | Co-Cr A | AWS A5.13 ECoCr-A/A5.21 ERCoCr-A | 350 | 19Cr-29Ni | ASTM B473 | – | – | |
| 19 | Nickel | Ni Alloy | as per Manufacturer’s Standard | – | Ni Alloy | as per Manufacturer’s Standard | – | – | |
| 19A | Alloy 625 | Alloy 625 | ASTM A494 CU5MCuC ASTM B564 UNS N08825 AWS A5.14 ERNiCrMo-3 |
– | Alloy 625 | ASTM B564 UNS N06625 | – | – | |
| 19B | Alloy C276 | Alloy C276 | ASTM A494 CW2M ASTM B564 UNS N10276 AWS A5.14 ERNiCroMo-4 |
– | Alloy C276 | ASTM B564 UNS N10276 | – | – | |
| 19C | Alloy 825 | Alloy 825 | ASTM A494 CU5MCuC ASTM B564 UNS N08825 AWS A5.14 ERNiCrMo-3 |
– | Alloy 825 | ASTM B564 UNS N08825 | – | – | |
| 20 | Nickel Hardfaced | Ni Alloy | as per Manufacturer’s Standard | – | Ni Alloy | as per Manufacturer’s Standard | – | – | |
| Co-Cr A | AWS A5.13 ECoCr-A/A5.21 ERCoCr-A | 350 | |||||||
| 20A | Alloy 625 Hardfaced | Alloy 625 | ASTM A494 CW6MC ASTM B564 UNS N06625 AWS A5.14 ERNiCrMo-3 |
– | Alloy 625 | ASTM B564 UNS N06625 | – | – | |
| Co-Cr A | AWS A5.13 ECoCr-A/A5.21 ERCoCr-A | 350 | |||||||
| 20B | Alloy C276 Hardfaced | Alloy C276 | ASTM A494 CW2M ASTM B564 UNS N10276 AWS A5.14 ERNiCrMo-4 |
– | Alloy C276 | ASTM B564 UNS N10276 | – | – | |
| Co-Cr A | AWS A5.13 ECoCr-A/A5.21 ERCoCr-A | 350 | |||||||
| 20C | Alloy 825 Hardfaced | Alloy 825 | ASTM A494 CU5MCuC ASTM B564 UNS N08825 AWS A5.14 ERNiCrMo-3 |
– | Alloy 825 | ASTM B564 UNS N08825 | – | – | |
| Co-Cr A | AWS A5.13 ECoCr-A/A5.21 ERCoCr-A | 350 | |||||||
| 21 | Nickel Dual Hardfaced | Co-Cr A | AWS A5.13 ECoCr-A/A5.21 ERCoCr-A | 350 | Ni Alloy | as per Manufacturer’s Standard | – | – | |
| NOTE: This table and information is only for reference and please check the official standards for updated information. | |||||||||
