Refractory Metal FeCr-HC CC-50-55
Grade
ASTM A99 · ISO 5448
CC-50-55 = charge chrome
Lower-Cr, higher-Si smelter grade used in bulk stainless melting where cost per chromium unit dominates.
Values for the CC-50-55 condition
Other FeCr-HC tempers and conditions
FeCr-HC is listed in 5 conditions; see the grade overview at FeCr-HC.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
CC-50-55This page Charge chrome | Lower-Cr, higher-Si smelter grade used in bulk stainless melting where cost per chromium unit dominates. | 60 HRC | — | |||
HC-60-70Default HC FeCr | Standard high-carbon ferrochrome lump for stainless and alloy steel melting where high chromium units per tonne are wanted. | 63 HRC | — | |||
Cr ≥ 52 %, C ≤ 10 % | Highest-carbon GB/T grade; cheapest chromium units, used where the shop has ample decarburisation capacity. | 64 HRC | — | |||
Cr ≥ 62 %, C ≤ 6.0 %, Si ≤ 3.0 % | Chemistry-controlled GB/T high-carbon grade for stainless heats needing a lower carbon input at high Cr. | 830 HV | — | |||
Low-silicon HC FeCr | Choose when the heat has a tight silicon ceiling (e.g. ferritic stainless, some tool steels). | — |
What is FeCr-HC CC-50-55?
FeCr-HC CC-50-55 is FeCr-HC in the CC-50-55 grade — lower-Cr, higher-Si smelter grade used in bulk stainless melting where cost per chromium unit dominates. The elastic modulus is 210 GPa (30.5 Msi). FeCr-HC CC-50-55 has a density of 6.9 g/cm³ (0.249 lb/in³), lighter than 60% of refractory metal grades. It melts at 1,400°C (2,552 °F). HC-60-70 is the default condition FabDigit quotes; CC-50-55 is available on request or by drawing note.
Advantages
- Low embodied carbon — 2.7 kg CO₂/kg, better than 100% of refractory metal grades
Limitations
- Needs corrosion protection — 27/100, worse than 100% of refractory metal grades
- Difficult to machine — 3/100, worse than 99% of refractory metal grades
- Poor heat conductor — 14 W/m·K (8.09 BTU/hr·ft·°F), worse than 90% of refractory metal grades
FeCr-HC CC-50-55 properties
Typical room-temperature values for FeCr-HC CC-50-55; 7 are specific to this condition. Other listed values are FeCr-HC reference data and may not represent this condition. Bars are the position among refractory metal grades.
Physical3
FeCr-HC CC-50-55 has a density of 6.9 g/cm³ (0.249 lb/in³), lighter than 60% of refractory metal grades. It melts at 1,400°C (2,552 °F).
Mechanical5
The elastic modulus is 210 GPa (30.5 Msi).
Thermal6
FeCr-HC CC-50-55 is rated for continuous service to 600°C (1,112 °F). It conducts heat at 14 W/m·K (8.09 BTU/hr·ft·°F), worse than 90% of refractory metal grades. Thermal expansion is 10 µm/m·K (5.56 µin/in·°F).
Electrical2
FeCr-HC CC-50-55 has an electrical resistivity of 1.1×10⁻⁶ Ω·m.
Chemical & Environmental2
Corrosion resistance is poor (27/100), worse than 100% of refractory metal grades.
Sustainability4
Producing a kilogram of FeCr-HC CC-50-55 takes about 40 MJ of energy and emits 2.7 kg of CO₂ — less than 100% of refractory metal grades. Typical recycled content is 5%.
Manufacturability1
FeCr-HC CC-50-55's machinability is not recommended (3/100, worse than 99% of refractory metal grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with FeCr-HC CC-50-55
Is FeCr-HC easy to machine?
Not machinable — the alloy is a brittle carbide aggregate that is jaw-crushed and screened to size, with tungsten-carbide or manganese-steel crushing liners.
Can FeCr-HC be welded?
Not weldable; it is a melt addition, charged with the scrap or added to the ladle/AOD converter and dissolved.
Can FeCr-HC be formed, bent or molded?
No wrought forming; product forms are cast pigs, crushed lump, granules, fines and briquettes.
What surface finishes work on FeCr-HC?
No coating or plating; only screening, magnetic/heavy-media cleaning, big-bag or bulk packaging and dry storage to limit rusting and moisture pickup.
FeCr-HC chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| CrGB/T 5683 FeCr68C8.0 class; charge-chrome grades run 50–55 % | 60 – 72 | 66 |
| Cgrade-defining; ≤6.0 / ≤8.0 / ≤10 classes | 4 – 9 | 7 |
| SiSi ≤1.5 / ≤3.0 / ≤6.0 sub-classes | 0.5 – 3 | 1.5 |
| P0.03 / 0.04 / 0.06 max by class | ≤ 0.06 | 0.03 |
| S | ≤ 0.06 | 0.03 |
| Febalance, with incidental Ti, Al, Ni, V from ore | balance |
FeCr-HC CC-50-55 — frequently asked
What is FeCr-HC CC-50-55 used for?
FeCr-HC CC-50-55 is typically used for stainless steel alloying addition, alloy steel production, cast iron alloying and welding electrode flux formulation. In short: cheapest bulk chromium source; highest-carbon ferrochrome; crushed lump, not stock shapes.
Is FeCr-HC CC-50-55 easy to machine?
Not especially — machinability is rated not recommended (3/100, worse than 99% of refractory metal grades). Not machinable — the alloy is a brittle carbide aggregate that is jaw-crushed and screened to size, with tungsten-carbide or manganese-steel crushing liners.
Can FeCr-HC CC-50-55 be welded?
Not weldable; it is a melt addition, charged with the scrap or added to the ladle/AOD converter and dissolved.
What surface finishes work on FeCr-HC CC-50-55?
No coating or plating; only screening, magnetic/heavy-media cleaning, big-bag or bulk packaging and dry storage to limit rusting and moisture pickup.
Can FeCr-HC CC-50-55 be formed, bent or molded?
No wrought forming; product forms are cast pigs, crushed lump, granules, fines and briquettes.
What is the maximum service temperature of FeCr-HC CC-50-55?
FeCr-HC CC-50-55 is rated for continuous use to about 600°C (1,112 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- GB/T 5683 (Ferrochromium) (2008)
- ISO 5448 Ferrochromium — Specification and delivery requirements — ISO (2019)
- ASTM A101 Standard Specification for Ferrochromium — ASTM International (2017)
- ASM Handbook Vol.3 — Alloy Phase Diagrams (Fe-Cr-C) — ASM International (1992)
- ICDA / ferrochrome life-cycle inventory summaries — International Chromium Development Association (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.