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17CrNiMo7-6 Alloy Steel Round Bar DIN 18CrNiMo7-6 1.6587 Solution Annealing Q+T Alloy Rod
18CrNiMo7-6 Round Bar – Case-Hardened Steel – Din 17210 EN 10084
Application
18CrNiMo7-6 round Bar – Case-Hardened Steel mainly used in mechanical parts, automobile parts, cement plants, power plants, mobile cranes and earth-moving equipment, paper mill, sugar mill, marine, wind gear, oil platform, fire protection, medical fields, industry equipment, collets, cams, rollers, bushes, spindles, and gears, etc.
Quality Standard
-BS EN 10084-2008 Case hardening steels.
-DIN 17210 for Case hardening steel.
Steel Grades
EN DIN ANFOR
18CrNiMo7-6 1.6587 18NCD6
Chemical Composition(%)
| C | Si | Mn | P | S | Cr | Mo | Ni |
| 0.15-0.21 | 0.40 max | 0.50-0.90 | 0.025 max | 0.025 max | 1.50-1.80 | 0.25-0.35 | 1.40-1.70 |
Mechanical Properties
| Process | Tensile Strength Rm (Mpa) | Yield Strength Rp0.2 (Mpa) | Elongation A5 (%) | Area Reduction Ratio C (%) | Hardness (HB) |
| Annealed | / | / | / | / | 229 max |
| Normalized | / | / | / | / | 140-210 |
| Q+T | 980-1270 | 685 min | 8 min | 35 min | 295-373 |
Heat Treatment
Annealing: Heat 18CrNiMo7-6 to 650-700°C, cool slowly in furnace.
Normalizing: 850-880°C, air.
Hardening: Carburising: 880-980°C. Core Hardening: 830-870°C,
water. Case Hardening: 780-820°C, water.
Tempering: 150-200°C.
Capacity
3,000 ton per month.
Test
Chemical analysis, Mechnical analysis, Ultrasonic testing, Metallographic, Surface quality and dimension report.
Package
Each bundle of max 3,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips.
Mill’s Test Certificate
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
