i emailed the au importer some time ago
"To answer your specific questions the anvils have the following properties:
Casting steel material: ZG45 (similar to ASTM1045 or DIN C45);
Hardness of working surface: HRC (Rockwell) 40-50 by high frequency hardening.
They are solid cast, with no voids, they have very large machined faces & "feet" to aid solid mounting, opposite & generous Hardie holes & Pritchel holes that are true & cleanly cast right thru the anvils; all at a very reasonable price & very reasonable freight rates. I palletise the larger anvils for shipment at no extra cost.
The attached document also includes some guidelines on anvil mounting & other accessories & ordering & packing & freight information.
I have sold many anvils to a wide range of crafts people including wrought iron manufacturers, general blacksmiths, knife makers, a school & an amateur farrier.
I have anvils in stock in the following sizes: 10; 30; 50; 75; 100; & 200kg, ranging in price from $68 to $1038.
Our products are also sold in Europe, including the discerning German market.
Thank you once again for your enquiry,
If I can be of further assistance, please contact me,"
the big question is "HRC (Rockwell) 40-50 by high frequency hardening"is it hard enough and what is high frequency hardening?? eny ideas.