Stainless Steel CB7Cu-1 vs CB7Cu-2
Stainless Steel · grade comparison
Stainless Steel CB7Cu-1 and CB7Cu-2 are both stainless steel grades. CB7Cu-2 is the stronger of the two: yield strength 860 MPa (125 ksi) against 790 MPa (115 ksi) for CB7Cu-1, about 9% more; tensile strength follows at 1,000 MPa (145 ksi) vs 895 MPa (130 ksi). CB7Cu-2 is harder — 311 HB against 270 HB for CB7Cu-1 — which matters for wear surfaces and threads. On the shop floor, CB7Cu-2 forms better (poor vs not recommended).
CB7Cu-2Choose it when strength drives the design, or when surface hardness matters.
CB7Cu-1 vs CB7Cu-2: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all stainless steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all stainless steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 196 GPa28.4 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 152 GPa22 Msi · Poisson's Ratio 0.28 · Reduction in Area 40%
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Same in both: Liquidus Temperature 1,440°C2,624 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Latent Heat of Fusion 270 J/g116 BTU/lb
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Electrical Conductivity 2.2 % IACS
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Same in both: Thermal Shock Resistance Index 8
Strength versus weight
Yield strength against density for every stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | CB7Cu-1 | CB7Cu-2 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$$ Premium |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 7 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Pickling, Plasma Spray, Silver Plating.
CB7Cu-1 vs CB7Cu-2 — frequently asked
Is CB7Cu-2 stronger than CB7Cu-1?
Yes. CB7Cu-2 has a typical yield strength of 860 MPa (125 ksi) against 790 MPa (115 ksi) for CB7Cu-1 — about 9% more. Tensile strength is 1,000 MPa (145 ksi) vs 895 MPa (130 ksi).
Which is cheaper, CB7Cu-1 or CB7Cu-2?
Both sit in the same relative cost tier ($$$, premium); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, CB7Cu-1 or CB7Cu-2?
CB7Cu-2. Its weldability rates good (65/100) against good (60/100) for CB7Cu-1.
Ready to make it?
Upload a CAD file and FabDigit prices the part in CB7Cu-1 and CB7Cu-2 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.