One table for the name on your drawing, whatever country it comes from, and a plain statement for each row of what is the same alloy, what is a near neighbour and what only sounds similar. Written for buyers who receive drawings from the USA, Europe, Britain, Japan, China, Russia, Poland and Brazil and have to order one bush.
Bearing bronzes are standardised by composition in every system – UNS numbers (C9xxxx), SAE numbers (660, 64…), EN 1982 symbols and CC numbers, old DIN names (Rg7, GBz12), BS 1400 letters (LG2, PB1, AB2), JIS CAC numbers, GB/T Z-designations, ГОСТ Бр-designations and Polish B-numbers. Two designations are equivalent when the composition ranges overlap and the casting standard sets comparable minimums; they are neighbours when the family and duty match but the chemistry does not.
Rows are the twelve grades we machine; columns are the designation systems. "nearest" marks a neighbour whose composition differs; "verify" marks a designation we have seen on drawings but could not confirm against the national standard – tell us if your drawing uses it.
| Grade | UNS / ASTM | SAE | EN 1982 | DIN (old) | BS 1400 | JIS H5120 | GB/T 1176 | ГОСТ 613 | PN (Poland) | Also known as |
|---|---|---|---|---|---|---|---|---|---|---|
| C93200 / SAE 660CuSn7Zn4Pb7 | C93200 | SAE 660 | CuSn7Zn4Pb7-C · CC493K | Rg7 · 2.1090 | — | — | — (cast to ASTM; nearest ZCuSn5Pb5Zn5) | — (nearest БрО5Ц5С5) | — (RG7 is quoted; nearest B555) | CDA 932 · 83-7-7-3 · Rg7 (DE) · RG-7 (ES) · UE7 (FR) · B7 (IT, withdrawn) · "bronze grafitado" (BR trade name) |
| C93700 / SAE 64CuSn10Pb10 | C93700 | SAE 64 | CuSn10Pb10-C · CC495K | CuPb10Sn · 2.1176 | LB2 | CAC603 (LBC3) | ZCuPb10Sn10 | БрО10С10 | B1010 | CDA 937 · 80-10-10 · AFNOR U-Pb10E10 |
| C93800 / SAE 67CuSn7Pb15 | C93800 | SAE 67 | CuSn7Pb15-C · CC496K | CuPb15Sn · 2.1182 | LB1 | CAC604 (LBC4) | ZCuPb15Sn8 | БрО8С12 (nearest) | B1510 (verify) | CDA 938 · 78-7-15 · nearest standard grade to Brazilian TM 23 (Pb 15–18 %) |
| CuSn12CuSn12 | C90800 (nearest) | — | CuSn12-C · CC483K | GBz12 · 2.1052 | PB2 (nearest) | CAC502 (PBC2, nearest) | ZCuSn10P1 (nearest, phosphor) | БрО10Ф1 (nearest) | — (verify) | Bronzo B14 (IT, withdrawn 1978) · UE12 (FR) · kalay bronzu (TR) · 88/12 (ES) |
| CuSn10P (ZCuSn10P1)CuSn10P | C90710 / C90700 (nearest) | SAE 65 (nearest) | CuSn11P-C · CC481K (nearest) | — (no DIN casting grade; nearest G-CuSn10) | PB1 | CAC502 (PBC2) | ZCuSn10P1 | БрОФ10-1 | B101 | Phosphor bronze · 89-11 · UE9P is a wrought bar, not this casting |
| CuSn10CuSn10 | C90700 (nearest) | — | CuSn10-C · CC480K | G-CuSn10 · 2.1050 | CT1 (nearest) | CAC403 (BC3, nearest) | ZCuSn10Zn2 (nearest) | БрО10 (nearest) | B10 | Lead-free, unleaded tin bronze |
| C90500 / SAE 62CuSn10Zn2 | C90500 | SAE 62 | — (nearest CuSn10-C · CC480K) | G-CuSn10Zn · 2.1086 | G1 | CAC403 (BC3) | ZCuSn10Zn2 | БрО10Ц2 | B102 (verify) | CDA 905 · "G bronze" · 88-10-2 · Rg10 (DE trade) · UE10 (FR) · nearest to Brazilian TM 620 |
| LG2 / C83600CuSn5Zn5Pb5 | C83600 | SAE 40 | CuSn5Zn5Pb5-C · CC491K | Rg5 · 2.1096 | LG2 | CAC406 (BC6) | ZCuSn5Pb5Zn5 | БрО5Ц5С5 | B555 | CDA 836 · 85-5-5-5 · "ounce metal" · leaded gunmetal · IS 318 LTB2 (IN) |
| C95400CuAl10Fe3 | C95400 | — | CuAl10Fe2-C · CC331G (nearest) | G-CuAl10Fe · 2.0940 | AB1 | CAC702 (AlBC2) | ZCuAl10Fe3 | БрА10Ж3Мц2 (nearest) · БрА9Ж3Л | BA1032 (nearest) | CDA 954 · aluminium bronze 9C · UA10N (FR) is the nickel grade, not this one |
| C95500CuAl10Ni5Fe4 | C95500 | — | CuAl10Fe5Ni5-C · CC333G | G-CuAl10Ni · 2.0975 | AB2 | CAC703 (AlBC3) | ZCuAl10Fe4Ni4 (nearest) | БрА10Ж4Н4Л | BA1044 (verify) | CDA 955 · nickel-aluminium bronze · UA10N (FR) · same class as CuAl10Ni5Fe5 (graphite-plugged 650S2 base alloy) |
| CuAl10Fe3Mn2 (ZCuAl10Fe3Mn2)CuAl10Fe3Mn2 | C95400 (nearest) | — | CuAl10Fe2-C · CC331G (nearest) | G-CuAl10Fe · 2.0940 (nearest) | AB1 (nearest) | CAC702 (nearest) | ZCuAl10Fe3Mn2 | БрА10Ж3Мц2 | BA1032 | Manganese-bearing variant of CuAl10Fe3; Polish BA1032 and Russian БрА10Ж3Мц2 buyers know it by name |
| C86300 / SAE 430BCuZn25Al5Mn4Fe3 | C86300 | SAE 430B | CuZn25Al5Mn4Fe3-C · CC762S | G-CuZn25Al5 · 2.0598 | HTB3 | CAC304 (HBsC4) | ZCuZn25Al6Fe3Mn3 | ЛЦ23А6Ж3Мц2 | MA58 (verify) | CDA 863 · "manganese bronze" · high-tensile brass · same class as CuZn25Al5Mn4 (graphite-plugged 650 base alloy) · AMS 4862 |
* Typical values per ASTM B505 / B271, EN 1982 and GB/T 1176 for the cast alloy; not a guarantee for a specific part. Test certificates (chemical analysis, hardness) are supplied on request with the order.
Compiled from the standards and from foundry and stockist catalogues in each market (2026). The last column is what buyers call the alloy in trade; the certificate names the standard the stock was cast to.
The mistakes we see most often on incoming drawings and enquiries:
Termomecânica's TM 23 has 15 – 18 % lead by their own data sheet; SAE 660 / C93200 has 6 – 8 %. TM 23 behaves like a high-lead bearing bronze – the standard grade nearest to it is C93800 / SAE 67 (CuSn7Pb15), which we machine. Order 660 where the duty is general, SAE 67 where the drawing really wants a high-lead bush. Brazilian buyers also call SAE 660 "bronze grafitado", which is not the same as sintered SAE 841 or graphite-plugged bronze.
Both are sold as "general bronze" in Australia, the UK, South Africa and India and are interchangeable for light duty, but LG2 (5-5-5 gunmetal, C83600) is softer and about 15 % weaker than 660 (7-7-3 leaded tin bronze, C93200). Heavy pins: 660. Pumps, valves, water: LG2.
Polish B101 is the phosphor bronze CuSn10P (hard, lead-free, 90 HB); RG7 is the leaded tin bronze CuSn7Zn4Pb7 / SAE 660 (soft, forgiving). B101 needs a hardened shaft and constant lubrication; RG7 runs on plain steel with grease. Polish drawings often say B101 because that is the bar the local shop had.
The Italian UNI B14 (withdrawn 1978) is CuSn12 – today CC483K. Some stockists sell a leaded "B14 industriale" as RG7; that is a different, leaded alloy. When the drawing says B14, order CuSn12 CC483K.
JIS CAC406 is the 5-5-5 gunmetal – the equivalent of LG2 / C83600, not of C93200. Japanese machines use it where American ones use 660, so it is the right replacement for a CAC406 position, but not the same alloy as 660.
Knowing what the letters and numbers encode is the fastest way to read a foreign drawing.
Copper alloys are C plus five digits; cast alloys start at C80000. C9xxxx are bronzes (C90–C95: tin, leaded tin, aluminium bronzes), C86xxx high-strength brasses. ASTM B505 covers continuous castings, B271 centrifugal, B584 sand castings; the number is the same across the three.
Old SAE J461 / J462 numbers still used on drawings and by stockists: 660 = C93200, 64 = C93700, 67 = C93800, 65 = C90700 phosphor bronze, 62 = C90500, 40 = C83600, 430B = C86300. The numbers are unrelated to each other.
Symbol by composition (CuSn7Zn4Pb7-C, the -C for casting) and a CC number (CC493K). Suffix letters show the casting method on certificates: GS sand, GM permanent mould, GZ centrifugal, GC continuous. Replaced DIN 1705 / 1709 / 1714 and the national standards of France, Italy and others.
Withdrawn but everywhere on drawings: Rg7 (Rotguss 7 = CuSn7Zn4Pb7), Rg5 (CuSn5Zn5Pb5), GBz12 or G-CuSn12, CuPb10Sn, G-CuAl10Fe, G-CuAl10Ni, G-CuZn25Al5, with material numbers 2.1090, 2.1096, 2.1052, 2.1176, 2.0940, 2.0975, 2.0598.
Letters for the family plus a number: LG2 leaded gunmetal, LB2 / LB1 leaded bronzes, PB1 / PB2 phosphor bronzes, G1 gunmetal, AB1 / AB2 aluminium bronzes, HTB3 high-tensile brass. Indian IS 318 uses LTB2 for the LG2 class.
CAC + three digits: CAC4xx gunmetals (CAC406 = BC6 = LG2 class), CAC5xx phosphor bronzes, CAC6xx leaded bronzes (CAC603 = LBC3 ≈ SAE 64, CAC604 = LBC4 ≈ SAE 67), CAC7xx aluminium bronzes (CAC702, CAC703), CAC3xx high-strength brasses (CAC304 ≈ C86300).
Z for cast plus composition: ZCuSn5Pb5Zn5, ZCuSn10P1, ZCuPb10Sn10, ZCuPb15Sn8, ZCuSn10Zn2, ZCuAl10Fe3, ZCuAl10Fe3Mn2, ZCuZn25Al6Fe3Mn3. Chinese foundries also cast the ASTM grades directly (C93200, C95400, C86300) and certify to ASTM.
Бр for bronze, Л for brass, then element letters and percentages: БрО5Ц5С5 (Sn 5, Zn 5, Pb 5 = LG2 class), БрОФ10-1 (Sn 10, P 1 = CuSn10P), БрО10С10 (= SAE 64), БрА9Ж3Л / БрА10Ж3Мц2 (aluminium bronzes), БрА10Ж4Н4Л (≈ C95500), ЛЦ23А6Ж3Мц2 (≈ C86300).
B plus digits from the old PN-91/H-87026: B101 (CuSn10P), B555 (CuSn5Zn5Pb5), B1010 (CuSn10Pb10), BA1032 (CuAl10Fe3Mn2), BA1044. RG7 is used in Poland by its German name. Since EN 1982 the CC numbers apply, but drawings keep the B numbers.
For a safe substitution send:
Equivalents are stated on the basis of published composition ranges and casting-standard minimums; national standards change and some trade names are not standardised. The certificate of the delivered stock is the binding document.
UNS C93200, CDA 932, EN 1982 CuSn7Zn4Pb7-C (CC493K), DIN Rg7 (2.1090), AFNOR UE7, Italian ex-B7 – all the same 83-7-7-3 leaded tin bronze. Not equivalent: LG2 / C83600 / CAC406 (5-5-5 gunmetal) and Brazilian TM 23 (15 – 18 % lead).
UNS C83600, SAE 40, EN 1982 CuSn5Zn5Pb5-C (CC491K), DIN Rg5 (2.1096), JIS CAC406 (BC6), GB ZCuSn5Pb5Zn5, ГОСТ БрО5Ц5С5, PN B555, IS 318 LTB2 – the 85-5-5-5 leaded gunmetal.
No. B101 is CuSn10P phosphor bronze (hard, lead-free); RG7 is CuSn7Zn4Pb7 / SAE 660 leaded tin bronze (soft, forgiving). They serve different duties – see the tin bronze page.
No – TM 23 has 15 – 18 % lead against 6 – 8 % in SAE 660. The nearest standard grade to TM 23 is C93800 / SAE 67 (CuSn7Pb15, CC496K).
CuSn12-C, EN 1982 CC483K (German GBz12, French UE12). B14 was withdrawn in 1978 with the UNI standard; "B14 industriale" sold as RG7 is a leaded alloy and not B14.
The one the stock was cast to – ASTM B505 / B271 for the UNS grades, EN 1982 for the CC grades, GB/T 1176 for the Chinese designations – with the chemical analysis. If your quality system needs a specific standard on the certificate, say so in the enquiry.
We confirm the alloy, the standard on the certificate and quote within 12 hours.
