VERIFIED(Source-Verified)

Silver 950

Primary Designation:ISO Ag950

Aliases:

950 SilverFrench 1st Standard SilverMinerve 1 Silver

Mat Grades internal verification confirms source-backed fidelity and data integrity. It does not constitute external certification or guaranteed lot conformity. Read engineering disclaimer →

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Data Completeness:2 composition elements and 13 condition-specific property values cataloged.

Omitted fields represent unverified properties. "Missing is better than invented."

Key Engineering Properties

Representative source rows, qualified by their reported conditions. Inspect the tables below for all values, limits, and source notes.

Density

10.38 g/cm³TYPICAL · at 20 °C

Electrical Conductivity

90 % IACSTYPICAL · at 20 °C

Thermal Conductivity

415 W/(m·K)TYPICAL · at 20 °C

Melting Point

undefined °C

Composition Excerpt

Ag ≥ 95 wt%Silver (min)

Standard Elemental Basis: MIN

Tensile Strength

≥ 200 MPaTYPICAL · Annealed (Soft) · temperature not stated

Engineering Summary

Silver 950 (950 parts per thousand / 95.0% Ag minimum, balance copper) is the traditional French 1st Standard (Minerve 1) and a widely recognized international standard for high-grade silversmithing and mechanical components. With 5.0% copper, it achieves an optimal compromise between cold malleability and structural stiffness.

Silver 950 Documented Applications

›Continental European precision holloware and tableware
›Low-resistance electromechanical sliding contacts
›Hand-forged musical instrument keys and flute tubes
›Architectural luxury fixtures and hardware

Recognized Aliases

Source-backed commercial trade name and short designations cataloged in canonical data.

950 SilverFrench 1st Standard SilverMinerve 1 Silver

Silver 950 Specifications & Designations

Standard Designations & Applicable Specifications — Semantically classified designations distinguishing primary standard identifiers, commercial trade names, and applicable specification references.

Direct Standard DesignationsDIRECT DESIGNATION

4 Primary Identifiers

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System	Identifier	Standard System Name	Classification Notes & Provenance
ISOPRIMARY	Ag950	International Organization for Standardization	—Ref: Standard Specifications for Silver & Silver Alloys (ASTM B742, ASTM B413, ISO 9202, DIN 17510)
DIN	Ag950	Deutsches Institut für Normung	—Ref: Standard Specifications for Silver & Silver Alloys (ASTM B742, ASTM B413, ISO 9202, DIN 17510)
FR-MINERVE	1st Standard (950)	French Guarantee Standard	—Ref: Standard Specifications for Silver & Silver Alloys (ASTM B742, ASTM B413, ISO 9202, DIN 17510)
EN	AgCu5	European Norm	—Ref: Standard Specifications for Silver & Silver Alloys (ASTM B742, ASTM B413, ISO 9202, DIN 17510)

Recognized Commercial Aliases & Trade NamesCOMMON ALIAS

3 Listed

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Recognized Name / Alias	Classification	Technical Usage & Context
950 Silver	Colloquial Alias	Colloquial or commercial industry synonym
French 1st Standard Silver	Historical Alias	Colloquial or commercial industry synonym
Minerve 1 Silver	Historical Alias	Colloquial or commercial industry synonym

Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE

2 Applicable Standards

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Standards Body	Specification Code	Specification Title / Scope	Relationship Type
ISO	ISO 9202	Jewellery and precious metals — Fineness of precious metal alloys	Specification Reference
DIN	DIN 17510	Feinsilber und Silberlegierungen (Fine silver and silver alloys)	Specification Reference

Engineering Notice: Applicable specifications establish manufacturing requirements, dimensional tolerances, and test criteria for specific product forms (e.g. bus bar, wire, plate, pipe). They represent applicable technical standards, not alternative or equivalent alloy grades.

Silver 950 Chemical Composition

Chemical Composition (Weight %) — Elemental limits and values from the cited source. Preserves exact semantic limits (minimums, maximums, and ranges).

Scroll horizontally for full elemental limits

Element	Symbol	Atomic No.	Semantic Basis	Specified Value	Unit	Metallurgical Notes & Qualification	Data Status
Silver	Ag	47	MINIMUM	≥ 95.00	wt%	Ref: ASTM International & ISO / DIN Standards Technical Committees	VERIFIED
Copper	Cu	29	RANGE	4.80 – 5.00	wt%	Ref: ASTM International & ISO / DIN Standards Technical Committees	VERIFIED

* Elemental percentages are expressed in weight percent (wt%). Values represent applicable specification limits. Unspecified trace elements are not fabricated or assumed.Preserves exact semantic basis

Property Display UnitsSwitch between Canonical SI and Source / US Customary units:

Silver 950 Physical Properties

Source-specific physical properties. Test temperatures are shown only where reported.

1 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Test Temperature / Context Range	Source Raw Reference	Source Reference	Status
Density	10.38 g/cm³	TYPICAL	Test Temp: 20 °C	10.38 g/cm³	ASTM International & Standards Technical Committees	VERIFIED

Silver 950 Thermal & Thermodynamic Properties

Phase change temperatures, thermal conductivity, specific heat, mean coefficients of thermal expansion across standardized temperature ranges, and recommended thermal processing windows.

2 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Test Temperature / Context Range	Source Raw Reference	Source Reference	Status
Thermal Conductivity	415 W/(m·K)	TYPICAL	Test Temp: 20 °C	415 W/(m·K)	ASTM International & Standards Technical Committees	VERIFIED
Melting Range (Solidus-Liquidus)	840 – 925 °C	RANGE	Solidus 840°C, Liquidus 925°C	840 – 925 °C	ASTM International & Standards Technical Committees	VERIFIED

Silver 950 Electrical Properties

Electrical conductivity and resistivity in their reported units and conditions.

1 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Test Temperature / Context Range	Source Raw Reference	Source Reference	Status
Electrical Conductivity	90 % IACS	TYPICAL	Test Temp: 20 °C	90 % IACS	ASTM International & Standards Technical Committees	VERIFIED

Silver 950 Mechanical Properties

Contextual Mechanical Properties & Tempers: Engineering strength, ductility, and hardness values grouped by product form, temper, and section thickness. Mechanical properties are contextual and not isotropic averages.

Elastic & Baseline Mechanical ConstantsSource-specific measurement conditions

Modulus of Elasticity

79 GPa

Product Form:

Temper / Condition:

Showing 4 of 4 conditions

Scroll horizontally for all conditions & tempers

Product Form	Temper / Condition	Section Size	Tensile (UTS)	Yield Strength	Elongation	Shear Strength	Fatigue Strength	Hardness (Scales Preserved)	Status
Strip & Wire	Annealed (Soft) Source values and qualifiers Yield Strength (0.2% Offset): ≥ 95 MPa (TYPICAL)ASTM International & ISO / DIN Standards Technical Committees — ASTM B742, ASTM B413, ISO 9202, DIN 17510 Ultimate Tensile Strength: ≥ 200 MPa (TYPICAL)ASTM International & ISO / DIN Standards Technical Committees — ASTM B742, ASTM B413, ISO 9202, DIN 17510 Elongation at Break: ≥ 32 % (TYPICAL)ASTM International & ISO / DIN Standards Technical Committees — ASTM B742, ASTM B413, ISO 9202, DIN 17510	—	≥ 200 MPa	≥ 95 MPa	≥ 32 %	—	—	—	VERIFIED
Strip & Wire	Hard Drawn (50% reduction) Source values and qualifiers Yield Strength (0.2% Offset): ≥ 320 MPa (TYPICAL)ASTM International & ISO / DIN Standards Technical Committees — ASTM B742, ASTM B413, ISO 9202, DIN 17510 Ultimate Tensile Strength: ≥ 380 MPa (TYPICAL)ASTM International & ISO / DIN Standards Technical Committees — ASTM B742, ASTM B413, ISO 9202, DIN 17510 Elongation at Break: ≥ 5 % (TYPICAL)ASTM International & ISO / DIN Standards Technical Committees — ASTM B742, ASTM B413, ISO 9202, DIN 17510	—	≥ 380 MPa	≥ 320 MPa	≥ 5 %	—	—	—	VERIFIED
Standard Product Form	Annealed (Soft) Source values and qualifiers HV Hardness: 55–68 HV (TYPICAL)ASTM International & ISO / DIN Standards Technical Committees — ASTM B742, ASTM B413, ISO 9202, DIN 17510	—	—	—	—	—	—	55–68 HV	VERIFIED
Standard Product Form	Hard Drawn (50% reduction) Source values and qualifiers HV Hardness: 115–138 HV (TYPICAL)ASTM International & ISO / DIN Standards Technical Committees — ASTM B742, ASTM B413, ISO 9202, DIN 17510	—	—	—	—	—	—	115–138 HV	VERIFIED

Hardness Integrity Notice: Rockwell B (HRB), Rockwell F (HRF), and Superficial 30T (HR30T) scales are reported on their measured scales without cross-scale mathematical conversion.

Source: See fact-level citations

Silver 950 Processing & Fabrication

Machining, joining, forming, and thermal processing ratings cataloged from the cited authoritative technical reference.

Source: ASTM International & ISO / DIN Standards Technical Committees

Machinability

Rated at approximately 38% relative to C36000. Moderate chip curl; tools must remain sharp to prevent burring.

Weldability & Joining

Readily brazed using silver solder; preheat recommended for thick sections to mitigate heat dissipation.

Heat Treatment & Working Ranges

Annealed at 500°C to 580°C for 20 minutes, followed by water quench. Shows slight precipitation hardening response.

Forming & Cold Working

Balanced cold workability; readily formed, punched, and rolled with high surface integrity.

Practical Engineering & Fabrication Notes

By Mat Grades Editorial Desk · Updated 2026-11-14. Use alongside the specified product standard and supplier certificate.

Machining & shop-floor behavior

The cataloged machining note for Silver 950 states: Rated at approximately 38% relative to C36000. Moderate chip curl; tools must remain sharp to prevent burring. A relevant hardness example is HV Hardness: 55–68 HV (typical; Annealed (Soft)). Use that supplied condition for a trial of the difficult feature. Record tool changes, burr removal, unclamped dimensions and accepted parts per hour. Relative machinability ratings from different reference scales should not be compared as if they were one common test.

Weldability, brazing & joining

The available joining assessment states: Readily brazed using silver solder; preheat recommended for thick sections to mitigate heat dissipation. The first cataloged strength example is Yield Strength (0.2% Offset): minimum 95 MPa (typical; Annealed (Soft), Strip & Wire). Assess the final part after joining or thermal processing. Include distortion, cleanup and inspection in the quotation. A material designation or favorable process rating is a starting point for qualification, not evidence that an untested joint meets the drawing.

Corrosion & service environment

Distinguish appearance, electrical contact behavior and mechanical wear in the service requirement. Tarnish resistance is not the same as freedom from surface films in every atmosphere. Check the mating material, cleaning method and final condition rather than using nominal purity as the only acceptance criterion. The recorded thermal example is Thermal Conductivity: 415 W/(m·K) (typical; ; test temperature 20 °C). State the exposure and inspection access in the design record so that a change of installation or cleaning method triggers a review. The selected composition entries are Ag minimum 95 wt%, Cu 4.8–5 wt%. Chemistry documents identity; it does not establish fluid compatibility.

Selection trade-offs & applications

Use ISO Ag950, DIN Ag950, FR-MINERVE 1st Standard (950) to identify the candidate, then specify the product form and delivered condition separately. The catalog lists Continental European precision holloware and tableware as an application example. The related candidate Sterling Silver 925 is linked for comparison; its commonly compared relationship must be checked before substitution. Compare the complete route through machining, joining, finish and inspection. Keep the certificate, required test location and acceptance criteria with the first-article record. A later change of grade, condition or source should be assessed against that same requirement.

Technical references: ASTM International & ISO / DIN Standards Technical Committees

Silver 950 Equivalent & Comparable Grades

Comparable Grades & Cross-References: Carefully classified cross-reference relationships for Silver 950. Comparable does not mean equivalent.

Scroll horizontally for relationship classifications & comparisons

Related Material	Family	Relationship Classification	Metallurgical Notes & Differences	Status	Action
Sterling Silver 925	Silver & Silver Alloys	Commonly Compared	Silver 950 has higher silver content (95.0% vs 92.5%) and slightly higher ductility, but slightly lower peak age-hardening potential than sterling silver.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED
Britannia Silver 958	Silver & Silver Alloys	Commonly Compared	Silver 950 is marginally harder and stronger than Britannia 958 (105 MPa vs 90 MPa yield strength) due to 5% Cu vs 4.16% Cu.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED

Related Engineering & Metallurgy Guides

Contextual technical guides explaining degradation mechanisms, testing methodologies, and selection criteria relevant to Silver 950.

Material Selection12 min read

Density of Silver: Pure, Sterling, Temperature Effects & Calculator

Silver possesses the highest electrical and thermal conductivity of any metallic element, accompanied by a solid room-temperature density of 10.49 g/cm³ (10,490 kg/m³). Because common alloying additions—chiefly copper—possess lower densities, precision volumetric measurement provides a fundamental non-destructive methodology for alloy purity and fineness verification.

Author: Mat Grades Editorial DeskRead Guide →

Sources

Sources & Provenance Trail: Authoritative reference publications, standards specifications, and data registers cited across this material record.

ASTM International & Standards Technical CommitteesStandard Specifications for Silver & Silver Alloys (ASTM B742, ASTM B413, ISO 9202, DIN 17510)

STANDARDS ORG

Authoritative data harmonized across ASTM B742, ASTM B413, ISO 9202, DIN 17510, British Hallmarking Act 1973, and ASM International monographs.

Issuing Body: ASTM International & ISO / DIN Standards Technical CommitteesRevision: ASTM B742-20 / ISO 9202:2019 / DIN 17510View Source Record ↗

Intellectual Property & Provenance Notice: Mat Grades cites technical literature from recognized industry associations and standards organizations. Underlying technical standards and publication data remain the intellectual property of their respective issuing organizations.