how much of this would add to lead forbullet casting(Brinell hardness of 20)?

you have to add antimony, this would not get hard enough

How hard/durable is this alloy? I need to cast fine details in pendant, earring, and ring form.

Yes, it's plenty hard. You can get some fine detail from your cast but not quite as well as you will from silver. There is more weight in the material so it might be too heavy for earrings. Good luck. We put a layer of fingernail polish over the surface to protect and shine.

What is the hardness of this alloy?

3 Modern pewter contains tin copper and antimony. This source says the Moh's hardness is 3

is this pewter food safe?

Its a state by state law, You have to look up your state max allowed parts per million and compare that to the certs

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RotoMetals High Quality Pewter - Alloy R98 Pewter Casting Ingot (Tin 98%, Bismuth 1.5%, Copper .50%)

RotoMetals High Quality Pewter - Alloy R98 Pewter Casting Ingot (Tin 98%, Bismuth 1.5%, Copper .50%)

Product ID: 5273672

🔥Melting range 466-590°F for precision control

⚙️98% Tin purity for superior casting

🛡️Lead-free, safe & eco-friendly alloy

378.46 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Cast your creativity with the pure power of RotoMetals!

OPTIMAL SIZE WEIGHT - Approx. 1 lb ingot, perfect for manageable handling
TRUSTED INDUSTRY CHOICE - Top 20 in Specialty Metal Raw Materials since 2009
PRECISION DETAIL CASTING - Bismuth reduces shrinkage for flawless small features
PREMIUM ALLOY COMPOSITION - 98% Tin with Copper & Bismuth for strength & durability
VERSATILE MOLD COMPATIBILITY - Works seamlessly with plaster, sand, and rubber molds

RotoMetals R98 Pewter Casting Ingot is a lead-free, high-purity alloy composed of 98% tin, 1.5% bismuth, and 0.5% copper. Designed for precision casting with minimal shrinkage, it melts between 466-590°F and weighs approximately 1 pound per ingot. Ideal for jewelry, collectibles, and decorative items, it supports various mold types and is a trusted choice in specialty metal raw materials.

Specifications

ASIN	B001QV3J46
Best Sellers Rank	#90,399 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #18 in Specialty Metal Raw Materials
Date First Available	January 27, 2009
Is Discontinued By Manufacturer	No
Item Weight	1.1 pounds
Manufacturer	Roto Metals
Package Dimensions	4.41 x 3.23 x 0.79 inches

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