Nickel Alloy CZ-100-SR (Stress relieved)
Heat-treated state
UNS N02100, J02100 · ASTM A494 CZ100
Choose for machined or weld-repaired castings that must be dimensionally stable and free of residual stress before caustic service.
Values for the SR condition
Other CZ-100 tempers and conditions
CZ-100 is listed in 4 conditions; see the grade overview at CZ-100.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Full anneal used to maximise ductility and homogenise the structure of heavy-section or weld-fabricated CZ-100 castings. | 140 | 360 | 32 | 95 HB | 13 % IACS |
SRThis page Stress relieved | Choose for machined or weld-repaired castings that must be dimensionally stable and free of residual stress before caustic service. | 150 | 370 | 28 | 105 HB | 12.5 % IACS |
FDefault As fabricated | Standard supply condition for A494 CZ-100 pump and valve castings; meets the specified 345 MPa UTS / 125 MPa YS / 10 % elongation minima without heat treatment. | 160 | 380 | 25 | 110 HB | 12 % IACS |
Hot isostatic pressed | Specify for pressure-tight small castings where microporosity must be closed to improve fatigue life and radiographic quality. | 165 | 400 | 35 | 105 HB | 12.5 % IACS |
What is CZ-100-SR?
CZ-100-SR is CZ-100 heat treated to SR — choose for machined or weld-repaired castings that must be dimensionally stable and free of residual stress before caustic service. CZ-100-SR has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 370 MPa (53.7 ksi) — weaker than 97% of nickel alloy grades. Elongation at break is 28% and the elastic modulus is 180 GPa (26.1 Msi). CZ-100-SR has a density of 8.85 g/cm³ (0.32 lb/in³), heavier than 84% of nickel alloy grades. It melts at 1,315°C (2,399 °F). F is the default condition FabDigit quotes; SR is available on request or by drawing note.
Advantages
- Easy to machine — 36/100, better than 98% of nickel alloy grades
- Conducts heat well — 52 W/m·K (30 BTU/hr·ft·°F), better than 97% of nickel alloy grades
- High electrical conductivity — 12.5 % IACS, better than 97% of nickel alloy grades
Limitations
- Low strength — 150 MPa (21.8 ksi), worse than 97% of nickel alloy grades
- Low stiffness — 180 GPa (26.1 Msi), worse than 85% of nickel alloy grades
- Limited service temperature — 480°C (896 °F), worse than 82% of nickel alloy grades
CZ-100-SR properties
Typical room-temperature values for CZ-100-SR; 21 are specific to this condition. Other listed values are CZ-100 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
CZ-100-SR has a density of 8.85 g/cm³ (0.32 lb/in³), heavier than 84% of nickel alloy grades. It melts at 1,315°C (2,399 °F).
Mechanical15
CZ-100-SR has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 370 MPa (53.7 ksi) — weaker than 97% of nickel alloy grades. Elongation at break is 28% and the elastic modulus is 180 GPa (26.1 Msi).
Thermal6
CZ-100-SR is rated for continuous service to 480°C (896 °F). It conducts heat at 52 W/m·K (30 BTU/hr·ft·°F), better than 97% of nickel alloy grades. Thermal expansion is 13.3 µm/m·K (7.39 µin/in·°F).
Electrical3
CZ-100-SR conducts electricity at 12.5 % IACS, better than 97% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (80/100), better than 61% of nickel alloy grades.
Sustainability4
Producing a kilogram of CZ-100-SR takes about 165 MJ of energy and emits 13 kg of CO₂ — more than 54% of nickel alloy grades. Typical recycled content is 40%.
Manufacturability8
CZ-100-SR's machinability is fair (36/100, better than 98% of nickel alloy grades); weldability good (62/100); formability poor (28/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with CZ-100-SR
Is CZ-100 easy to machine?
Machine like commercially pure nickel: slow-to-moderate speed, heavy positive-rake sharp carbide, rigid setup, generous feed to cut under the work-hardened skin, and copious sulphur-free coolant to avoid built-up edge.
Can CZ-100 be welded?
GTAW/SMAW with ERNi-1 / ENi-1 filler; grind the casting skin back to clean metal, keep interpass temperature low and heat input modest, and exclude sulphur, lead and grease which cause hot cracking and porosity.
Can CZ-100 be formed, bent or molded?
Sand, investment or centrifugal cast with high pouring temperature and strong risering — CZ-100 has a long liquid-to-solid contraction path and shrinks about 2 %; not a wrought/formable product.
What surface finishes work on CZ-100?
Not anodizable; use mechanical polishing, pickling in HF/HNO₃-free acid mixes, electropolishing, or electroless nickel where a fully pore-free surface is needed for food or pharma duty.
CZ-100 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 |
|---|---|---|
| Cimproves fluidity; graphitic C possible | ≤ 1 | 0.6 |
| Sideoxidiser/fluidity aid | ≤ 2 | 1.2 |
| Cu | ≤ 1.25 | 0.3 |
| Fe | ≤ 3 | 0.8 |
| Mn | ≤ 1.5 | 0.5 |
| Shot-shortness limit | ≤ 0.03 | — |
| P | ≤ 0.03 | — |
| NiNi plus incidental Co | ≥ 95 (balance) | — |
CZ-100-SR — frequently asked
What is CZ-100-SR used for?
CZ-100-SR is typically used for caustic soda pump casings, food processing valves and electrolytic cell components. In short: cast pure nickel; caustic-service casting grade; high-purity food-contact castings.
What is the yield strength of CZ-100-SR?
CZ-100-SR has a typical yield strength of 150 MPa (21.8 ksi) and a tensile strength of 370 MPa (53.7 ksi) — weaker than 97% of nickel alloy grades. Strength varies by condition: see the 4 listed tempers.
Is CZ-100-SR easy to machine?
Not especially — machinability is rated fair (36/100, better than 98% of nickel alloy grades). Machine like commercially pure nickel: slow-to-moderate speed, heavy positive-rake sharp carbide, rigid setup, generous feed to cut under the work-hardened skin, and copious sulphur-free coolant to avoid built-up edge.
Can CZ-100-SR be welded?
Yes — weldability is rated good (62/100). GTAW/SMAW with ERNi-1 / ENi-1 filler; grind the casting skin back to clean metal, keep interpass temperature low and heat input modest, and exclude sulphur, lead and grease which cause hot cracking and porosity.
What surface finishes work on CZ-100-SR?
Not anodizable; use mechanical polishing, pickling in HF/HNO₃-free acid mixes, electropolishing, or electroless nickel where a fully pore-free surface is needed for food or pharma duty.
Can CZ-100-SR be formed, bent or molded?
Sand, investment or centrifugal cast with high pouring temperature and strong risering — CZ-100 has a long liquid-to-solid contraction path and shrinks about 2 %; not a wrought/formable product.
What is the maximum service temperature of CZ-100-SR?
CZ-100-SR is rated for continuous use to about 480°C (896 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CZ-100-F and CZ-100-ANN?
F is the default condition — standard supply condition for A494 CZ-100 pump and valve castings; meets the specified 345 MPa UTS / 125 MPa YS / 10 % elongation minima without heat treatment. ANN: full anneal used to maximise ductility and homogenise the structure of heavy-section or weld-fabricated CZ-100 castings. Yield strength is 160 MPa in F versus 140 MPa in ANN.
Sources
- ASTM A494/A494M — Castings, Nickel and Nickel Alloy — ASTM International (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASM Handbook Vol. 15 — Casting — ASM International (2008)
- Nickel 200/201 alloy data (wrought reference) — Special Metals Corporation (2020)
- Corrosion resistance of nickel and nickel-containing alloys in caustic soda — Nickel Institute (NiDI) (2018)
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.